java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:06:02,354 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:06:02,356 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:06:02,372 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:06:02,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:06:02,374 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:06:02,376 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:06:02,378 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:06:02,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:06:02,387 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:06:02,388 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:06:02,389 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:06:02,390 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:06:02,395 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:06:02,396 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:06:02,397 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:06:02,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:06:02,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:06:02,408 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:06:02,410 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:06:02,414 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:06:02,415 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:06:02,421 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:06:02,421 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:06:02,421 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:06:02,423 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:06:02,423 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:06:02,424 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:06:02,425 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:06:02,429 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:06:02,429 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:06:02,430 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:06:02,430 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:06:02,430 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:06:02,431 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:06:02,432 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:06:02,432 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 11:06:02,460 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:06:02,460 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:06:02,461 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:06:02,461 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:06:02,461 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:06:02,461 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:06:02,461 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:06:02,462 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:06:02,462 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:06:02,462 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:06:02,462 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:06:02,463 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:06:02,463 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:06:02,463 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:06:02,463 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:06:02,464 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:06:02,464 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:06:02,464 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:06:02,464 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:06:02,464 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:06:02,465 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:06:02,465 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:06:02,465 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:06:02,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:06:02,465 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:06:02,466 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:06:02,466 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:06:02,466 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:06:02,466 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:06:02,466 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:06:02,467 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:06:02,467 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:06:02,467 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:06:02,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:06:02,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:06:02,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:06:02,547 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:06:02,547 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:06:02,548 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label26_false-unreach-call.c [2018-07-24 11:06:02,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd335f19/b4ff1f18da484f1f9803f8c8334af6a6/FLAGc73be5d80 [2018-07-24 11:06:03,366 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:06:03,367 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label26_false-unreach-call.c [2018-07-24 11:06:03,410 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd335f19/b4ff1f18da484f1f9803f8c8334af6a6/FLAGc73be5d80 [2018-07-24 11:06:03,433 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd335f19/b4ff1f18da484f1f9803f8c8334af6a6 [2018-07-24 11:06:03,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:06:03,448 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:06:03,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:06:03,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:06:03,456 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:06:03,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:06:03" (1/1) ... [2018-07-24 11:06:03,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3819ccc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:03, skipping insertion in model container [2018-07-24 11:06:03,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:06:03" (1/1) ... [2018-07-24 11:06:03,775 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:06:04,818 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:06:04,837 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:06:05,629 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:06:05,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05 WrapperNode [2018-07-24 11:06:05,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:06:05,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:06:05,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:06:05,791 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:06:05,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:05,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:05,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:06:05,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:06:05,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:06:05,947 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:06:06,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:06,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:06,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:06,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:06,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:06,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:06,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... [2018-07-24 11:06:06,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:06:06,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:06:06,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:06:06,625 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:06:06,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:06:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:06:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:06:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:06:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:06:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:06:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:06:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:06:06,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:06:06,706 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:06:06,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:06:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:06:06,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:06:06,707 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:06:06,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:06:17,952 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:06:17,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:06:17 BoogieIcfgContainer [2018-07-24 11:06:17,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:06:17,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:06:17,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:06:17,957 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:06:17,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:06:03" (1/3) ... [2018-07-24 11:06:17,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcb39b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:06:17, skipping insertion in model container [2018-07-24 11:06:17,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:06:05" (2/3) ... [2018-07-24 11:06:17,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcb39b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:06:17, skipping insertion in model container [2018-07-24 11:06:17,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:06:17" (3/3) ... [2018-07-24 11:06:17,961 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label26_false-unreach-call.c [2018-07-24 11:06:17,970 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:06:17,980 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:06:18,040 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:06:18,041 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:06:18,041 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:06:18,042 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:06:18,042 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:06:18,042 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:06:18,042 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:06:18,042 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:06:18,042 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:06:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-24 11:06:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2018-07-24 11:06:18,133 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:18,135 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:06:18,135 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:18,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1276917285, now seen corresponding path program 1 times [2018-07-24 11:06:18,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:18,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:18,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:18,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:18,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:20,094 WARN L169 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:06:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:21,151 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:06:21,151 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:06:21,152 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:06:21,160 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:06:21,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:06:21,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:06:21,175 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-24 11:06:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:28,657 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-24 11:06:28,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:06:28,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 781 [2018-07-24 11:06:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:28,699 INFO L225 Difference]: With dead ends: 2647 [2018-07-24 11:06:28,699 INFO L226 Difference]: Without dead ends: 1738 [2018-07-24 11:06:28,708 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:06:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-24 11:06:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-24 11:06:28,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-24 11:06:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3121 transitions. [2018-07-24 11:06:28,858 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3121 transitions. Word has length 781 [2018-07-24 11:06:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:28,863 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3121 transitions. [2018-07-24 11:06:28,863 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:06:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3121 transitions. [2018-07-24 11:06:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2018-07-24 11:06:28,902 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:28,903 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:06:28,903 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:28,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1009674802, now seen corresponding path program 1 times [2018-07-24 11:06:28,904 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:28,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:28,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:28,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:28,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:29,439 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:06:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:30,046 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:06:30,047 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:06:30,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:06:30,050 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:06:30,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:06:30,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:06:30,051 INFO L87 Difference]: Start difference. First operand 1738 states and 3121 transitions. Second operand 6 states. [2018-07-24 11:06:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:40,840 INFO L93 Difference]: Finished difference Result 5353 states and 9715 transitions. [2018-07-24 11:06:40,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:06:40,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2018-07-24 11:06:40,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:40,867 INFO L225 Difference]: With dead ends: 5353 [2018-07-24 11:06:40,867 INFO L226 Difference]: Without dead ends: 3621 [2018-07-24 11:06:40,874 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:06:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2018-07-24 11:06:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3589. [2018-07-24 11:06:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2018-07-24 11:06:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 6080 transitions. [2018-07-24 11:06:40,980 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 6080 transitions. Word has length 840 [2018-07-24 11:06:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:40,980 INFO L471 AbstractCegarLoop]: Abstraction has 3589 states and 6080 transitions. [2018-07-24 11:06:40,980 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:06:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 6080 transitions. [2018-07-24 11:06:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2018-07-24 11:06:40,998 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:40,999 INFO L353 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, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:06:40,999 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:41,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2127244265, now seen corresponding path program 1 times [2018-07-24 11:06:41,000 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:41,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:41,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:41,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:41,002 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:42,007 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:42,008 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:06:42,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:42,020 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:42,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:43,520 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:44,358 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:44,359 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 11:06:44,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:44,378 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:45,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:46,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-07-24 11:06:47,016 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:06:47,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 11:06:47,016 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:06:47,018 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:06:47,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:06:47,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-07-24 11:06:47,019 INFO L87 Difference]: Start difference. First operand 3589 states and 6080 transitions. Second operand 9 states. [2018-07-24 11:07:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:05,626 INFO L93 Difference]: Finished difference Result 14692 states and 25427 transitions. [2018-07-24 11:07:05,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-24 11:07:05,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 849 [2018-07-24 11:07:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:05,695 INFO L225 Difference]: With dead ends: 14692 [2018-07-24 11:07:05,695 INFO L226 Difference]: Without dead ends: 11109 [2018-07-24 11:07:05,711 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3431 GetRequests, 3394 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=306, Invalid=1100, Unknown=0, NotChecked=0, Total=1406 [2018-07-24 11:07:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11109 states. [2018-07-24 11:07:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11109 to 11033. [2018-07-24 11:07:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11033 states. [2018-07-24 11:07:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11033 states to 11033 states and 16297 transitions. [2018-07-24 11:07:06,089 INFO L78 Accepts]: Start accepts. Automaton has 11033 states and 16297 transitions. Word has length 849 [2018-07-24 11:07:06,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:07:06,090 INFO L471 AbstractCegarLoop]: Abstraction has 11033 states and 16297 transitions. [2018-07-24 11:07:06,091 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:07:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 11033 states and 16297 transitions. [2018-07-24 11:07:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2018-07-24 11:07:06,159 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:07:06,160 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2018-07-24 11:07:06,160 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:07:06,160 INFO L82 PathProgramCache]: Analyzing trace with hash -89202762, now seen corresponding path program 1 times [2018-07-24 11:07:06,161 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:07:06,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:06,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:06,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:06,162 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:07:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:07:08,436 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:08,436 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 11:07:08,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:08,445 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:08,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:07:09,711 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:07:10,309 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:07:10,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 11:07:10,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:07:10,310 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:07:10,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:07:10,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:07:10,311 INFO L87 Difference]: Start difference. First operand 11033 states and 16297 transitions. Second operand 3 states. [2018-07-24 11:07:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:15,919 INFO L93 Difference]: Finished difference Result 32348 states and 48990 transitions. [2018-07-24 11:07:15,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:07:15,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 907 [2018-07-24 11:07:15,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:16,043 INFO L225 Difference]: With dead ends: 32348 [2018-07-24 11:07:16,043 INFO L226 Difference]: Without dead ends: 21321 [2018-07-24 11:07:16,084 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1826 GetRequests, 1814 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:07:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21321 states. [2018-07-24 11:07:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21321 to 21321. [2018-07-24 11:07:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21321 states. [2018-07-24 11:07:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21321 states to 21321 states and 31202 transitions. [2018-07-24 11:07:16,578 INFO L78 Accepts]: Start accepts. Automaton has 21321 states and 31202 transitions. Word has length 907 [2018-07-24 11:07:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:07:16,582 INFO L471 AbstractCegarLoop]: Abstraction has 21321 states and 31202 transitions. [2018-07-24 11:07:16,582 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:07:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 21321 states and 31202 transitions. [2018-07-24 11:07:16,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2018-07-24 11:07:16,659 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:07:16,659 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:07:16,660 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:07:16,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1312342194, now seen corresponding path program 1 times [2018-07-24 11:07:16,660 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:07:16,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:16,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:16,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:16,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:07:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:17,013 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:07:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 142 proven. 62 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-24 11:07:17,749 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:17,749 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:07:17,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:17,761 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:18,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 11:07:18,830 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 142 proven. 62 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-24 11:07:19,338 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:07:19,338 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:07:19,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:07:19,340 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:07:19,340 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:07:19,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:07:19,340 INFO L87 Difference]: Start difference. First operand 21321 states and 31202 transitions. Second operand 5 states. [2018-07-24 11:07:27,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:27,094 INFO L93 Difference]: Finished difference Result 52986 states and 78958 transitions. [2018-07-24 11:07:27,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:07:27,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2018-07-24 11:07:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:27,498 INFO L225 Difference]: With dead ends: 52986 [2018-07-24 11:07:27,498 INFO L226 Difference]: Without dead ends: 31671 [2018-07-24 11:07:27,553 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1873 GetRequests, 1858 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:07:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31671 states. [2018-07-24 11:07:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31671 to 31569. [2018-07-24 11:07:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31569 states. [2018-07-24 11:07:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31569 states to 31569 states and 42239 transitions. [2018-07-24 11:07:28,170 INFO L78 Accepts]: Start accepts. Automaton has 31569 states and 42239 transitions. Word has length 932 [2018-07-24 11:07:28,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:07:28,170 INFO L471 AbstractCegarLoop]: Abstraction has 31569 states and 42239 transitions. [2018-07-24 11:07:28,170 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:07:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 31569 states and 42239 transitions. [2018-07-24 11:07:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2018-07-24 11:07:28,263 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:07:28,264 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:07:28,264 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:07:28,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2134753632, now seen corresponding path program 1 times [2018-07-24 11:07:28,265 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:07:28,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:28,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:28,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:28,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:07:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:28,677 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:07:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 274 proven. 96 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-24 11:07:29,607 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:29,607 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-24 11:07:29,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:29,624 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:07:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:30,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-07-24 11:07:31,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:31,601 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 11:07:31,714 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 11:07:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 274 proven. 96 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-24 11:07:32,398 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:07:32,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:07:32,398 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:07:32,400 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:07:32,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:07:32,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:07:32,401 INFO L87 Difference]: Start difference. First operand 31569 states and 42239 transitions. Second operand 5 states. [2018-07-24 11:07:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:39,845 INFO L93 Difference]: Finished difference Result 78334 states and 107285 transitions. [2018-07-24 11:07:39,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:07:39,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1064 [2018-07-24 11:07:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:40,015 INFO L225 Difference]: With dead ends: 78334 [2018-07-24 11:07:40,016 INFO L226 Difference]: Without dead ends: 46771 [2018-07-24 11:07:40,079 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2137 GetRequests, 2122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:07:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46771 states. [2018-07-24 11:07:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46771 to 46637. [2018-07-24 11:07:40,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46637 states. [2018-07-24 11:07:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46637 states to 46637 states and 59894 transitions. [2018-07-24 11:07:40,952 INFO L78 Accepts]: Start accepts. Automaton has 46637 states and 59894 transitions. Word has length 1064 [2018-07-24 11:07:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:07:40,953 INFO L471 AbstractCegarLoop]: Abstraction has 46637 states and 59894 transitions. [2018-07-24 11:07:40,953 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:07:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 46637 states and 59894 transitions. [2018-07-24 11:07:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1086 [2018-07-24 11:07:41,022 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:07:41,023 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:07:41,023 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:07:41,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1633072537, now seen corresponding path program 1 times [2018-07-24 11:07:41,024 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:07:41,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:41,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:41,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:41,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:07:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 320 proven. 103 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 11:07:42,804 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:42,804 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:07:42,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:42,824 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:43,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 11:07:44,029 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 11:07:45,053 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:07:45,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 11:07:45,054 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:07:45,055 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:07:45,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:07:45,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:07:45,056 INFO L87 Difference]: Start difference. First operand 46637 states and 59894 transitions. Second operand 3 states. [2018-07-24 11:07:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:49,817 INFO L93 Difference]: Finished difference Result 93268 states and 119782 transitions. [2018-07-24 11:07:49,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:07:49,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1085 [2018-07-24 11:07:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:49,949 INFO L225 Difference]: With dead ends: 93268 [2018-07-24 11:07:49,950 INFO L226 Difference]: Without dead ends: 46637 [2018-07-24 11:07:50,020 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2175 GetRequests, 2165 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:07:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46637 states. [2018-07-24 11:07:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46637 to 46601. [2018-07-24 11:07:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46601 states. [2018-07-24 11:07:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46601 states to 46601 states and 55824 transitions. [2018-07-24 11:07:50,720 INFO L78 Accepts]: Start accepts. Automaton has 46601 states and 55824 transitions. Word has length 1085 [2018-07-24 11:07:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:07:50,722 INFO L471 AbstractCegarLoop]: Abstraction has 46601 states and 55824 transitions. [2018-07-24 11:07:50,722 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:07:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 46601 states and 55824 transitions. [2018-07-24 11:07:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1556 [2018-07-24 11:07:50,804 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:07:50,806 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:07:50,806 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:07:50,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1748409530, now seen corresponding path program 1 times [2018-07-24 11:07:50,807 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:07:50,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:50,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:50,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:50,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:07:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 797 proven. 385 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2018-07-24 11:07:53,356 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:53,356 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:07:53,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:53,364 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:54,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 1461 proven. 2 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2018-07-24 11:07:55,595 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 1009 proven. 344 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2018-07-24 11:07:56,906 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:56,906 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:07:56,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:56,923 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:58,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 1461 proven. 2 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2018-07-24 11:07:59,792 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:08:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 1009 proven. 344 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2018-07-24 11:08:01,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:08:01,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-07-24 11:08:01,068 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:08:01,069 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:08:01,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:08:01,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:08:01,070 INFO L87 Difference]: Start difference. First operand 46601 states and 55824 transitions. Second operand 9 states. [2018-07-24 11:08:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:08:22,375 INFO L93 Difference]: Finished difference Result 151465 states and 185567 transitions. [2018-07-24 11:08:22,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-24 11:08:22,376 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1555 [2018-07-24 11:08:22,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:08:22,668 INFO L225 Difference]: With dead ends: 151465 [2018-07-24 11:08:22,668 INFO L226 Difference]: Without dead ends: 98501 [2018-07-24 11:08:22,762 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6258 GetRequests, 6224 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2018-07-24 11:08:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98501 states. [2018-07-24 11:08:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98501 to 98188. [2018-07-24 11:08:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98188 states. [2018-07-24 11:08:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98188 states to 98188 states and 106336 transitions. [2018-07-24 11:08:24,379 INFO L78 Accepts]: Start accepts. Automaton has 98188 states and 106336 transitions. Word has length 1555 [2018-07-24 11:08:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:08:24,379 INFO L471 AbstractCegarLoop]: Abstraction has 98188 states and 106336 transitions. [2018-07-24 11:08:24,379 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:08:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 98188 states and 106336 transitions. [2018-07-24 11:08:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2204 [2018-07-24 11:08:24,559 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:08:24,560 INFO L353 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:08:24,561 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:08:24,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1531041472, now seen corresponding path program 1 times [2018-07-24 11:08:24,562 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:08:24,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:08:24,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:24,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:08:24,563 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:08:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:25,234 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 11:08:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5585 backedges. 1429 proven. 722 refuted. 0 times theorem prover too weak. 3434 trivial. 0 not checked. [2018-07-24 11:08:27,449 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:08:27,449 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:08:27,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:27,463 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:08:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:28,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:08:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5585 backedges. 890 proven. 2 refuted. 0 times theorem prover too weak. 4693 trivial. 0 not checked. [2018-07-24 11:08:30,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:08:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5585 backedges. 1446 proven. 588 refuted. 0 times theorem prover too weak. 3551 trivial. 0 not checked. [2018-07-24 11:08:31,910 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:08:31,911 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:08:31,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:31,928 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:08:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:33,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:08:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5585 backedges. 890 proven. 2 refuted. 0 times theorem prover too weak. 4693 trivial. 0 not checked. [2018-07-24 11:08:35,554 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:08:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5585 backedges. 1446 proven. 588 refuted. 0 times theorem prover too weak. 3551 trivial. 0 not checked. [2018-07-24 11:08:37,439 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:08:37,440 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-07-24 11:08:37,440 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:08:37,442 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 11:08:37,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 11:08:37,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:08:37,443 INFO L87 Difference]: Start difference. First operand 98188 states and 106336 transitions. Second operand 14 states. [2018-07-24 11:09:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:09:12,809 INFO L93 Difference]: Finished difference Result 410839 states and 470792 transitions. [2018-07-24 11:09:12,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-24 11:09:12,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2203 [2018-07-24 11:09:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:09:14,491 INFO L225 Difference]: With dead ends: 410839 [2018-07-24 11:09:14,491 INFO L226 Difference]: Without dead ends: 312662 [2018-07-24 11:09:14,630 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8924 GetRequests, 8852 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1524 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=876, Invalid=3680, Unknown=0, NotChecked=0, Total=4556 [2018-07-24 11:09:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312662 states. [2018-07-24 11:09:19,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312662 to 306970. [2018-07-24 11:09:19,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306970 states. [2018-07-24 11:09:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306970 states to 306970 states and 334053 transitions. [2018-07-24 11:09:19,529 INFO L78 Accepts]: Start accepts. Automaton has 306970 states and 334053 transitions. Word has length 2203 [2018-07-24 11:09:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:09:19,529 INFO L471 AbstractCegarLoop]: Abstraction has 306970 states and 334053 transitions. [2018-07-24 11:09:19,529 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 11:09:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand 306970 states and 334053 transitions. [2018-07-24 11:09:20,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2922 [2018-07-24 11:09:20,023 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:09:20,025 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:09:20,025 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:09:20,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1667021508, now seen corresponding path program 1 times [2018-07-24 11:09:20,026 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:09:20,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:09:20,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:09:20,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:09:20,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:09:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:09:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7378 backedges. 2448 proven. 1524 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2018-07-24 11:09:32,146 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:09:32,146 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:09:32,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:09:32,153 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:09:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:09:33,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-07-24 11:09:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7378 backedges. 3601 proven. 2 refuted. 0 times theorem prover too weak. 3775 trivial. 0 not checked. [2018-07-24 11:09:35,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:09:35,971 WARN L177 SmtUtils]: Removed 1 from assertion stack [2018-07-24 11:09:35,971 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 11:09:36,173 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:09:36,174 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:09:36,179 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:09:36,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:09:36 BoogieIcfgContainer [2018-07-24 11:09:36,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:09:36,180 INFO L168 Benchmark]: Toolchain (without parser) took 212733.66 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-24 11:09:36,181 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:09:36,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2341.38 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: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. [2018-07-24 11:09:36,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.11 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. [2018-07-24 11:09:36,183 INFO L168 Benchmark]: Boogie Preprocessor took 676.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:09:36,186 INFO L168 Benchmark]: RCFGBuilder took 11328.70 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 202.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -111.3 MB). Peak memory consumption was 731.9 MB. Max. memory is 7.1 GB. [2018-07-24 11:09:36,187 INFO L168 Benchmark]: TraceAbstraction took 198225.56 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: -302.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 11:09:36,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2341.38 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: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.11 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 676.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11328.70 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 202.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -111.3 MB). Peak memory consumption was 731.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198225.56 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: -302.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4661]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4661). Cancelled while BasicCegarLoop was analyzing trace of length 2922 with TraceHistMax 10, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was doing sequential composition of 15 TransFormulas, while SimplifyDDAWithTimeout was simplifying term of DAG size 1. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 198.1s OverallTime, 10 OverallIterations, 12 TraceHistogramMax, 122.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3161 SDtfs, 57881 SDslu, 2412 SDs, 0 SdLazy, 73462 SolverSat, 23352 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26643 GetRequests, 26434 SyntacticMatches, 33 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2126 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=306970occurred in iteration=9, 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: 9.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 6385 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 31.0s InterpolantComputationTime, 23418 NumberOfCodeBlocks, 23418 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 36591 ConstructedInterpolants, 0 QuantifiedInterpolants, 76451476 SizeOfPredicates, 16 NumberOfNonLiveVariables, 19135 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 40573/44104 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_label26_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-09-36-218.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label26_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-09-36-218.csv Completed graceful shutdown