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_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 13:05:13,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 13:05:13,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 13:05:13,729 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 13:05:13,729 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 13:05:13,730 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 13:05:13,732 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 13:05:13,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 13:05:13,735 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 13:05:13,736 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 13:05:13,737 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 13:05:13,738 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 13:05:13,739 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 13:05:13,740 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 13:05:13,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 13:05:13,742 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 13:05:13,743 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 13:05:13,745 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 13:05:13,750 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 13:05:13,754 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 13:05:13,756 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 13:05:13,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 13:05:13,763 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 13:05:13,763 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 13:05:13,767 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 13:05:13,769 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 13:05:13,770 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 13:05:13,771 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 13:05:13,772 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 13:05:13,775 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 13:05:13,775 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 13:05:13,776 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 13:05:13,776 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 13:05:13,777 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 13:05:13,780 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 13:05:13,781 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 13:05:13,781 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 13:05:13,812 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 13:05:13,812 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 13:05:13,813 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 13:05:13,813 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 13:05:13,813 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 13:05:13,814 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 13:05:13,814 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 13:05:13,814 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 13:05:13,814 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 13:05:13,814 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 13:05:13,815 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 13:05:13,815 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 13:05:13,816 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 13:05:13,816 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 13:05:13,816 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 13:05:13,816 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 13:05:13,817 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 13:05:13,817 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 13:05:13,817 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 13:05:13,817 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 13:05:13,817 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 13:05:13,818 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 13:05:13,818 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 13:05:13,818 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:05:13,818 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 13:05:13,818 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 13:05:13,819 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 13:05:13,819 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 13:05:13,819 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 13:05:13,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 13:05:13,819 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 13:05:13,820 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 13:05:13,820 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 13:05:13,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 13:05:13,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 13:05:13,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 13:05:13,883 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 13:05:13,883 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 13:05:13,884 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label59_true-unreach-call.c [2018-07-24 13:05:14,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d220515a6/3e2e0910218a4793bc0a34137842c11f/FLAG07fa1b275 [2018-07-24 13:05:14,731 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 13:05:14,732 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label59_true-unreach-call.c [2018-07-24 13:05:14,764 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d220515a6/3e2e0910218a4793bc0a34137842c11f/FLAG07fa1b275 [2018-07-24 13:05:14,781 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d220515a6/3e2e0910218a4793bc0a34137842c11f [2018-07-24 13:05:14,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 13:05:14,794 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 13:05:14,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 13:05:14,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 13:05:14,803 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 13:05:14,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:05:14" (1/1) ... [2018-07-24 13:05:14,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4d770e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:14, skipping insertion in model container [2018-07-24 13:05:14,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:05:14" (1/1) ... [2018-07-24 13:05:15,132 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 13:05:16,117 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:05:16,136 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 13:05:16,983 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:05:17,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17 WrapperNode [2018-07-24 13:05:17,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 13:05:17,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 13:05:17,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 13:05:17,144 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 13:05:17,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 13:05:17,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 13:05:17,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 13:05:17,297 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 13:05:17,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... [2018-07-24 13:05:17,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 13:05:17,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 13:05:17,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 13:05:17,927 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 13:05:17,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:05:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 13:05:18,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 13:05:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:05:18,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:05:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:05:18,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:05:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 13:05:18,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 13:05:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 13:05:18,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 13:05:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 13:05:18,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 13:05:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:05:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:05:30,226 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 13:05:30,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:05:30 BoogieIcfgContainer [2018-07-24 13:05:30,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 13:05:30,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 13:05:30,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 13:05:30,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 13:05:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:05:14" (1/3) ... [2018-07-24 13:05:30,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7d4e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:05:30, skipping insertion in model container [2018-07-24 13:05:30,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:05:17" (2/3) ... [2018-07-24 13:05:30,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7d4e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:05:30, skipping insertion in model container [2018-07-24 13:05:30,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:05:30" (3/3) ... [2018-07-24 13:05:30,235 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label59_true-unreach-call.c [2018-07-24 13:05:30,246 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 13:05:30,256 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 13:05:30,317 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 13:05:30,318 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 13:05:30,318 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 13:05:30,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 13:05:30,318 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 13:05:30,318 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 13:05:30,318 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 13:05:30,318 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 13:05:30,319 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 13:05:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-24 13:05:30,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2018-07-24 13:05:30,411 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:30,413 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, 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 13:05:30,413 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:30,420 INFO L82 PathProgramCache]: Analyzing trace with hash 520317084, now seen corresponding path program 1 times [2018-07-24 13:05:30,423 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:30,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:30,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:30,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:30,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:32,018 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:05:33,093 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 13:05:33,096 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:05:33,096 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:05:33,096 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:33,104 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:05:33,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:05:33,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:05:33,119 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-24 13:05:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:39,839 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-24 13:05:39,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:05:39,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 803 [2018-07-24 13:05:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:39,883 INFO L225 Difference]: With dead ends: 2647 [2018-07-24 13:05:39,884 INFO L226 Difference]: Without dead ends: 1738 [2018-07-24 13:05:39,892 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 13:05:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-24 13:05:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-24 13:05:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-24 13:05:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3286 transitions. [2018-07-24 13:05:40,061 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3286 transitions. Word has length 803 [2018-07-24 13:05:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:40,064 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3286 transitions. [2018-07-24 13:05:40,065 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:05:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3286 transitions. [2018-07-24 13:05:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-07-24 13:05:40,110 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:40,111 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:40,111 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:40,112 INFO L82 PathProgramCache]: Analyzing trace with hash 730593881, now seen corresponding path program 1 times [2018-07-24 13:05:40,112 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:40,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:40,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:40,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:40,114 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:40,992 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:05:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:41,683 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:05:41,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:05:41,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:41,687 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:05:41,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:05:41,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:05:41,688 INFO L87 Difference]: Start difference. First operand 1738 states and 3286 transitions. Second operand 3 states. [2018-07-24 13:05:49,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:49,088 INFO L93 Difference]: Finished difference Result 5140 states and 9845 transitions. [2018-07-24 13:05:49,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:05:49,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 812 [2018-07-24 13:05:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:49,114 INFO L225 Difference]: With dead ends: 5140 [2018-07-24 13:05:49,115 INFO L226 Difference]: Without dead ends: 3408 [2018-07-24 13:05:49,121 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:05:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-07-24 13:05:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-07-24 13:05:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-07-24 13:05:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 6080 transitions. [2018-07-24 13:05:49,218 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 6080 transitions. Word has length 812 [2018-07-24 13:05:49,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:49,220 INFO L471 AbstractCegarLoop]: Abstraction has 3408 states and 6080 transitions. [2018-07-24 13:05:49,220 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:05:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 6080 transitions. [2018-07-24 13:05:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2018-07-24 13:05:49,249 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:49,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:49,252 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:49,253 INFO L82 PathProgramCache]: Analyzing trace with hash 944753661, now seen corresponding path program 1 times [2018-07-24 13:05:49,253 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:49,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:49,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:49,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:49,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:52,104 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:52,104 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 13:05:52,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:52,125 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:52,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:53,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:55,348 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 13:05:55,349 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 13:05:55,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:55,350 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:05:55,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:05:55,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 13:05:55,354 INFO L87 Difference]: Start difference. First operand 3408 states and 6080 transitions. Second operand 3 states. [2018-07-24 13:06:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:02,983 INFO L93 Difference]: Finished difference Result 10180 states and 18378 transitions. [2018-07-24 13:06:02,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:06:02,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 830 [2018-07-24 13:06:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:03,029 INFO L225 Difference]: With dead ends: 10180 [2018-07-24 13:06:03,029 INFO L226 Difference]: Without dead ends: 6778 [2018-07-24 13:06:03,040 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1672 GetRequests, 1660 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 13:06:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2018-07-24 13:06:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 6778. [2018-07-24 13:06:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6778 states. [2018-07-24 13:06:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6778 states to 6778 states and 11522 transitions. [2018-07-24 13:06:03,230 INFO L78 Accepts]: Start accepts. Automaton has 6778 states and 11522 transitions. Word has length 830 [2018-07-24 13:06:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:03,232 INFO L471 AbstractCegarLoop]: Abstraction has 6778 states and 11522 transitions. [2018-07-24 13:06:03,233 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:06:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6778 states and 11522 transitions. [2018-07-24 13:06:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2018-07-24 13:06:03,271 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:03,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:03,272 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash -855757267, now seen corresponding path program 1 times [2018-07-24 13:06:03,273 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:03,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:03,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:03,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:03,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:03,620 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:06:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:06:04,630 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:06:04,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 13:06:04,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:06:04,632 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 13:06:04,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 13:06:04,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 13:06:04,632 INFO L87 Difference]: Start difference. First operand 6778 states and 11522 transitions. Second operand 6 states. [2018-07-24 13:06:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:14,743 INFO L93 Difference]: Finished difference Result 20555 states and 36224 transitions. [2018-07-24 13:06:14,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:06:14,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 854 [2018-07-24 13:06:14,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:14,833 INFO L225 Difference]: With dead ends: 20555 [2018-07-24 13:06:14,834 INFO L226 Difference]: Without dead ends: 13783 [2018-07-24 13:06:14,855 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 13:06:14,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13783 states. [2018-07-24 13:06:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13783 to 13708. [2018-07-24 13:06:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13708 states. [2018-07-24 13:06:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 22296 transitions. [2018-07-24 13:06:15,308 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 22296 transitions. Word has length 854 [2018-07-24 13:06:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:15,309 INFO L471 AbstractCegarLoop]: Abstraction has 13708 states and 22296 transitions. [2018-07-24 13:06:15,309 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 13:06:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 22296 transitions. [2018-07-24 13:06:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2018-07-24 13:06:15,371 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:15,372 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:06:15,372 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1926268552, now seen corresponding path program 1 times [2018-07-24 13:06:15,373 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:15,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:15,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:15,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:15,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:06:16,053 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:16,053 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:06:16,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:16,063 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:16,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-07-24 13:06:17,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:06:18,124 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:06:18,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 13:06:18,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:06:18,126 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:06:18,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:06:18,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-07-24 13:06:18,126 INFO L87 Difference]: Start difference. First operand 13708 states and 22296 transitions. Second operand 5 states. [2018-07-24 13:06:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:25,881 INFO L93 Difference]: Finished difference Result 41681 states and 70777 transitions. [2018-07-24 13:06:25,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 13:06:25,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 886 [2018-07-24 13:06:25,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:26,002 INFO L225 Difference]: With dead ends: 41681 [2018-07-24 13:06:26,003 INFO L226 Difference]: Without dead ends: 27979 [2018-07-24 13:06:26,057 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1779 GetRequests, 1767 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-07-24 13:06:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27979 states. [2018-07-24 13:06:26,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27979 to 27806. [2018-07-24 13:06:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27806 states. [2018-07-24 13:06:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27806 states to 27806 states and 41231 transitions. [2018-07-24 13:06:26,967 INFO L78 Accepts]: Start accepts. Automaton has 27806 states and 41231 transitions. Word has length 886 [2018-07-24 13:06:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:26,967 INFO L471 AbstractCegarLoop]: Abstraction has 27806 states and 41231 transitions. [2018-07-24 13:06:26,967 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:06:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 27806 states and 41231 transitions. [2018-07-24 13:06:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2018-07-24 13:06:27,057 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:27,058 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:27,058 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:27,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1590855162, now seen corresponding path program 1 times [2018-07-24 13:06:27,058 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:27,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:27,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:27,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:27,060 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:27,363 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:06:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 28 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 13:06:27,728 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:27,728 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 13:06:27,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:27,739 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:28,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-07-24 13:06:28,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 28 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 13:06:29,151 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:29,152 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:06:29,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:29,169 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:30,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-07-24 13:06:30,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 28 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 13:06:31,077 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:06:31,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 13:06:31,078 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:06:31,080 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:06:31,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:06:31,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:06:31,080 INFO L87 Difference]: Start difference. First operand 27806 states and 41231 transitions. Second operand 9 states. [2018-07-24 13:06:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:49,464 INFO L93 Difference]: Finished difference Result 90834 states and 148313 transitions. [2018-07-24 13:06:49,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-24 13:06:49,465 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 911 [2018-07-24 13:06:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:49,726 INFO L225 Difference]: With dead ends: 90834 [2018-07-24 13:06:49,726 INFO L226 Difference]: Without dead ends: 63034 [2018-07-24 13:06:49,824 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3698 GetRequests, 3658 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2018-07-24 13:06:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63034 states. [2018-07-24 13:06:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63034 to 61942. [2018-07-24 13:06:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61942 states. [2018-07-24 13:06:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61942 states to 61942 states and 83465 transitions. [2018-07-24 13:06:51,243 INFO L78 Accepts]: Start accepts. Automaton has 61942 states and 83465 transitions. Word has length 911 [2018-07-24 13:06:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:51,244 INFO L471 AbstractCegarLoop]: Abstraction has 61942 states and 83465 transitions. [2018-07-24 13:06:51,244 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:06:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 61942 states and 83465 transitions. [2018-07-24 13:06:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2018-07-24 13:06:51,354 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:51,355 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 13:06:51,355 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:51,356 INFO L82 PathProgramCache]: Analyzing trace with hash -176542231, now seen corresponding path program 1 times [2018-07-24 13:06:51,356 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:51,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:51,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:51,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:51,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 215 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 13:06:52,427 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:52,427 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:06:52,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:52,435 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:52,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 13:06:53,677 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 215 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 13:06:54,485 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:54,486 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:06:54,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:54,504 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:55,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-07-24 13:06:55,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 200 proven. 77 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-24 13:06:56,726 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:06:56,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 13:06:56,727 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:06:56,729 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:06:56,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:06:56,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:06:56,730 INFO L87 Difference]: Start difference. First operand 61942 states and 83465 transitions. Second operand 9 states. [2018-07-24 13:07:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:07:10,189 INFO L93 Difference]: Finished difference Result 123492 states and 173304 transitions. [2018-07-24 13:07:10,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-24 13:07:10,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1004 [2018-07-24 13:07:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:07:10,338 INFO L225 Difference]: With dead ends: 123492 [2018-07-24 13:07:10,338 INFO L226 Difference]: Without dead ends: 61556 [2018-07-24 13:07:10,424 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4070 GetRequests, 4030 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2018-07-24 13:07:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61556 states. [2018-07-24 13:07:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61556 to 60784. [2018-07-24 13:07:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60784 states. [2018-07-24 13:07:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60784 states to 60784 states and 74666 transitions. [2018-07-24 13:07:11,568 INFO L78 Accepts]: Start accepts. Automaton has 60784 states and 74666 transitions. Word has length 1004 [2018-07-24 13:07:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:07:11,568 INFO L471 AbstractCegarLoop]: Abstraction has 60784 states and 74666 transitions. [2018-07-24 13:07:11,569 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:07:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 60784 states and 74666 transitions. [2018-07-24 13:07:11,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2018-07-24 13:07:11,652 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:07:11,653 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 13:07:11,653 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:07:11,654 INFO L82 PathProgramCache]: Analyzing trace with hash -843331717, now seen corresponding path program 1 times [2018-07-24 13:07:11,654 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:07:11,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:07:11,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:07:11,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:07:11,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:07:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:07:12,297 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 13:07:12,534 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 13:07:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 205 proven. 103 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:07:13,614 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:07:13,614 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 13:07:13,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:07:13,623 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:07:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:07:14,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:07:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 13:07:14,958 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:07:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 222 proven. 73 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 13:07:15,551 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:07:15,551 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 13:07:15,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:07:15,569 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:07:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:07:16,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:07:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 13:07:17,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:07:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 222 proven. 73 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 13:07:17,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:07:17,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-07-24 13:07:17,962 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:07:17,964 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 13:07:17,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 13:07:17,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-07-24 13:07:17,964 INFO L87 Difference]: Start difference. First operand 60784 states and 74666 transitions. Second operand 14 states. [2018-07-24 13:08:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:08:03,371 INFO L93 Difference]: Finished difference Result 235179 states and 315795 transitions. [2018-07-24 13:08:03,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-07-24 13:08:03,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1011 [2018-07-24 13:08:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:08:03,372 INFO L225 Difference]: With dead ends: 235179 [2018-07-24 13:08:03,372 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 13:08:03,576 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4152 GetRequests, 4082 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=843, Invalid=3447, Unknown=0, NotChecked=0, Total=4290 [2018-07-24 13:08:03,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 13:08:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 13:08:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 13:08:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 13:08:03,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1011 [2018-07-24 13:08:03,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:08:03,579 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 13:08:03,579 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 13:08:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 13:08:03,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 13:08:03,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 13:08:04,125 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,247 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,322 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,322 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,327 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,544 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,638 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,639 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,648 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:04,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,030 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,123 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,124 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,532 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,707 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,763 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:05,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:06,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:06,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:06,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:06,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:06,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:06,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:07,415 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:07,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:08,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:08,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:09,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:09,253 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:09,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:09,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:10,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:10,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:10,895 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:10,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:11,279 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:11,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:11,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:11,979 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:12,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:12,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:12,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:12,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:12,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:13,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:13,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:13,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:13,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:15,171 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:15,914 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:15,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:16,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:16,407 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:16,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:16,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:17,170 WARN L169 SmtUtils]: Spent 13.23 s on a formula simplification. DAG size of input: 1420 DAG size of output: 1062 [2018-07-24 13:08:18,190 WARN L169 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-07-24 13:08:19,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,472 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,472 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,508 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,508 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,532 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,532 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,562 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,645 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,708 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,709 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,878 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,879 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:19,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,099 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,535 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,627 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:20,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:21,212 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:21,270 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:21,519 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:21,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:22,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:22,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:22,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:22,746 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:22,921 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:22,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:23,434 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:23,502 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:23,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:23,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:24,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:24,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:24,539 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:24,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:24,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:25,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:25,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:25,611 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:26,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:26,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:26,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:27,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:28,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:28,260 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:28,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:28,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:28,993 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:29,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:08:29,457 WARN L169 SmtUtils]: Spent 10.13 s on a formula simplification. DAG size of input: 1420 DAG size of output: 1062 [2018-07-24 13:08:32,046 WARN L169 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 463 DAG size of output: 46 [2018-07-24 13:08:49,373 WARN L169 SmtUtils]: Spent 17.31 s on a formula simplification. DAG size of input: 1027 DAG size of output: 49 [2018-07-24 13:08:51,518 WARN L169 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 463 DAG size of output: 46 Received shutdown request... [2018-07-24 13:08:52,311 WARN L177 SmtUtils]: Removed 138 from assertion stack [2018-07-24 13:08:52,312 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 13:08:52,313 INFO L168 Benchmark]: Toolchain (without parser) took 217519.67 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-07-24 13:08:52,314 INFO L168 Benchmark]: CDTParser took 0.26 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 13:08:52,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2347.83 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 13:08:52,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 152.49 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 13:08:52,318 INFO L168 Benchmark]: Boogie Preprocessor took 629.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. [2018-07-24 13:08:52,319 INFO L168 Benchmark]: RCFGBuilder took 12300.24 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 158.3 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -30.0 MB). Peak memory consumption was 725.3 MB. Max. memory is 7.1 GB. [2018-07-24 13:08:52,323 INFO L168 Benchmark]: TraceAbstraction took 202084.53 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -266.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-07-24 13:08:52,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 2347.83 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 152.49 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 629.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12300.24 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 158.3 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -30.0 MB). Peak memory consumption was 725.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202084.53 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -266.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4727]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 463. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_13-08-52-358.csv Completed graceful shutdown