java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:47:31,183 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:47:31,189 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:47:31,201 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:47:31,202 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:47:31,203 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:47:31,204 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:47:31,206 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:47:31,208 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:47:31,208 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:47:31,209 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:47:31,209 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:47:31,210 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:47:31,211 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:47:31,213 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:47:31,213 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:47:31,214 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:47:31,216 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:47:31,218 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:47:31,219 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:47:31,221 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:47:31,222 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:47:31,224 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:47:31,224 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:47:31,225 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:47:31,226 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:47:31,227 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:47:31,227 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:47:31,228 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:47:31,229 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:47:31,230 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:47:31,232 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:47:31,232 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:47:31,232 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:47:31,233 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:47:31,234 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:47:31,234 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:47:31,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:47:31,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:47:31,264 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:47:31,265 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:47:31,265 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:47:31,265 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:47:31,265 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:47:31,269 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:47:31,269 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:47:31,269 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:47:31,269 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:47:31,270 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:47:31,270 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:47:31,272 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:47:31,272 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:47:31,272 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:47:31,272 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:47:31,272 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:47:31,273 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:47:31,273 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:47:31,273 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:47:31,273 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:47:31,275 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:47:31,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:47:31,275 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:47:31,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:47:31,276 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:47:31,276 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:47:31,276 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:47:31,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:47:31,276 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:47:31,278 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:47:31,278 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:47:31,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:47:31,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:47:31,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:47:31,374 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:47:31,375 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:47:31,375 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-09-10 12:47:31,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dadbef6/51a16d32a53444e4bfed2364d90f5e6a/FLAG433bcfff7 [2018-09-10 12:47:32,385 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:47:32,386 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-09-10 12:47:32,435 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dadbef6/51a16d32a53444e4bfed2364d90f5e6a/FLAG433bcfff7 [2018-09-10 12:47:32,457 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dadbef6/51a16d32a53444e4bfed2364d90f5e6a [2018-09-10 12:47:32,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:47:32,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:47:32,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:47:32,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:47:32,488 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:47:32,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:47:32" (1/1) ... [2018-09-10 12:47:32,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4554d60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:32, skipping insertion in model container [2018-09-10 12:47:32,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:47:32" (1/1) ... [2018-09-10 12:47:33,003 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:47:34,618 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:47:34,639 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:47:35,896 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:47:36,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36 WrapperNode [2018-09-10 12:47:36,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:47:36,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:47:36,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:47:36,701 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:47:36,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:36,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:37,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:47:37,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:47:37,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:47:37,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:47:38,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:38,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:38,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:38,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:38,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:38,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:38,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... [2018-09-10 12:47:38,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:47:38,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:47:38,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:47:38,805 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:47:38,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:47:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:47:38,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:47:38,877 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_output5 [2018-09-10 12:47:38,877 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_output5 [2018-09-10 12:47:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:47:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:47:38,877 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_output6 [2018-09-10 12:47:38,877 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_output6 [2018-09-10 12:47:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 12:47:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 12:47:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:47:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:47:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 12:47:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 12:47:38,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:47:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:47:38,880 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:47:38,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:48:01,785 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:48:01,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:48:01 BoogieIcfgContainer [2018-09-10 12:48:01,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:48:01,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:48:01,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:48:01,790 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:48:01,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:47:32" (1/3) ... [2018-09-10 12:48:01,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fb34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:48:01, skipping insertion in model container [2018-09-10 12:48:01,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:47:36" (2/3) ... [2018-09-10 12:48:01,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fb34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:48:01, skipping insertion in model container [2018-09-10 12:48:01,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:48:01" (3/3) ... [2018-09-10 12:48:01,794 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label37_true-unreach-call.c [2018-09-10 12:48:01,803 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:48:01,813 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:48:01,897 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:48:01,897 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:48:01,898 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:48:01,898 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:48:01,898 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:48:01,898 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:48:01,898 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:48:01,898 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:48:01,899 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:48:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-10 12:48:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-10 12:48:01,964 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:48:01,965 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:48:01,966 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:48:01,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1483591544, now seen corresponding path program 1 times [2018-09-10 12:48:01,975 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:48:02,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:48:02,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:48:02,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:48:02,029 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:48:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:48:02,484 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:48:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:48:02,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:48:02,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:48:02,608 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:48:02,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:48:02,631 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:48:02,632 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:48:02,636 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-10 12:48:21,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:48:21,401 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-09-10 12:48:21,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:48:21,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-09-10 12:48:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:48:21,460 INFO L225 Difference]: With dead ends: 4999 [2018-09-10 12:48:21,460 INFO L226 Difference]: Without dead ends: 3219 [2018-09-10 12:48:21,477 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:48:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-09-10 12:48:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-09-10 12:48:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-09-10 12:48:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-09-10 12:48:21,718 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 45 [2018-09-10 12:48:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:48:21,718 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-09-10 12:48:21,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:48:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-09-10 12:48:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-09-10 12:48:21,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:48:21,727 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:48:21,727 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:48:21,727 INFO L82 PathProgramCache]: Analyzing trace with hash 157539840, now seen corresponding path program 1 times [2018-09-10 12:48:21,728 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:48:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:48:21,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:48:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:48:21,729 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:48:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:48:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:48:22,295 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:48:22,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:48:22,296 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:48:22,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:48:22,299 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:48:22,299 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:48:22,299 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-09-10 12:48:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:48:53,258 INFO L93 Difference]: Finished difference Result 9679 states and 17673 transitions. [2018-09-10 12:48:53,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:48:53,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-09-10 12:48:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:48:53,293 INFO L225 Difference]: With dead ends: 9679 [2018-09-10 12:48:53,294 INFO L226 Difference]: Without dead ends: 6470 [2018-09-10 12:48:53,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:48:53,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2018-09-10 12:48:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6362. [2018-09-10 12:48:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6362 states. [2018-09-10 12:48:53,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 9934 transitions. [2018-09-10 12:48:53,502 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 9934 transitions. Word has length 117 [2018-09-10 12:48:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:48:53,503 INFO L480 AbstractCegarLoop]: Abstraction has 6362 states and 9934 transitions. [2018-09-10 12:48:53,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:48:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 9934 transitions. [2018-09-10 12:48:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-10 12:48:53,516 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:48:53,517 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:48:53,517 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:48:53,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1787936944, now seen corresponding path program 1 times [2018-09-10 12:48:53,517 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:48:53,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:48:53,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:48:53,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:48:53,520 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:48:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:48:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:48:53,865 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:48:53,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:48:53,865 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:48:53,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:48:53,866 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:48:53,867 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:48:53,867 INFO L87 Difference]: Start difference. First operand 6362 states and 9934 transitions. Second operand 6 states. [2018-09-10 12:49:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:49:18,307 INFO L93 Difference]: Finished difference Result 20125 states and 31386 transitions. [2018-09-10 12:49:18,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:49:18,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-09-10 12:49:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:49:18,375 INFO L225 Difference]: With dead ends: 20125 [2018-09-10 12:49:18,375 INFO L226 Difference]: Without dead ends: 13769 [2018-09-10 12:49:18,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:49:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13769 states. [2018-09-10 12:49:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13769 to 13660. [2018-09-10 12:49:18,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13660 states. [2018-09-10 12:49:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13660 states to 13660 states and 19193 transitions. [2018-09-10 12:49:18,723 INFO L78 Accepts]: Start accepts. Automaton has 13660 states and 19193 transitions. Word has length 118 [2018-09-10 12:49:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:49:18,724 INFO L480 AbstractCegarLoop]: Abstraction has 13660 states and 19193 transitions. [2018-09-10 12:49:18,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:49:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 13660 states and 19193 transitions. [2018-09-10 12:49:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-10 12:49:18,727 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:49:18,728 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:49:18,728 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:49:18,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1445706178, now seen corresponding path program 1 times [2018-09-10 12:49:18,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:49:18,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:49:18,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:49:18,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:49:18,730 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:49:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:49:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:49:19,242 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:49:19,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:49:19,242 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:49:19,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:49:19,243 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:49:19,243 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:49:19,243 INFO L87 Difference]: Start difference. First operand 13660 states and 19193 transitions. Second operand 6 states. [2018-09-10 12:50:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:50:10,804 INFO L93 Difference]: Finished difference Result 52368 states and 80630 transitions. [2018-09-10 12:50:10,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:50:10,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-09-10 12:50:10,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:50:10,975 INFO L225 Difference]: With dead ends: 52368 [2018-09-10 12:50:10,975 INFO L226 Difference]: Without dead ends: 38714 [2018-09-10 12:50:11,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:50:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38714 states. [2018-09-10 12:50:11,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38714 to 38372. [2018-09-10 12:50:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38372 states. [2018-09-10 12:50:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38372 states to 38372 states and 52520 transitions. [2018-09-10 12:50:12,009 INFO L78 Accepts]: Start accepts. Automaton has 38372 states and 52520 transitions. Word has length 135 [2018-09-10 12:50:12,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:50:12,010 INFO L480 AbstractCegarLoop]: Abstraction has 38372 states and 52520 transitions. [2018-09-10 12:50:12,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:50:12,010 INFO L276 IsEmpty]: Start isEmpty. Operand 38372 states and 52520 transitions. [2018-09-10 12:50:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-10 12:50:12,017 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:50:12,018 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:50:12,018 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:50:12,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1096402876, now seen corresponding path program 1 times [2018-09-10 12:50:12,019 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:50:12,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:50:12,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:50:12,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:50:12,020 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:50:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:50:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 76 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:50:12,357 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:50:12,358 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:50:12,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:50:12,376 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:50:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:50:12,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:50:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:50:12,685 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:50:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 76 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:50:13,619 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:50:13,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 12:50:13,620 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:50:13,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:50:13,621 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:50:13,621 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:50:13,622 INFO L87 Difference]: Start difference. First operand 38372 states and 52520 transitions. Second operand 5 states. [2018-09-10 12:50:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:50:40,748 INFO L93 Difference]: Finished difference Result 115132 states and 165839 transitions. [2018-09-10 12:50:40,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:50:40,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2018-09-10 12:50:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:50:41,105 INFO L225 Difference]: With dead ends: 115132 [2018-09-10 12:50:41,105 INFO L226 Difference]: Without dead ends: 76766 [2018-09-10 12:50:41,215 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:50:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76766 states. [2018-09-10 12:50:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76766 to 75195. [2018-09-10 12:50:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75195 states. [2018-09-10 12:50:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75195 states to 75195 states and 101202 transitions. [2018-09-10 12:50:43,246 INFO L78 Accepts]: Start accepts. Automaton has 75195 states and 101202 transitions. Word has length 200 [2018-09-10 12:50:43,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:50:43,247 INFO L480 AbstractCegarLoop]: Abstraction has 75195 states and 101202 transitions. [2018-09-10 12:50:43,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:50:43,247 INFO L276 IsEmpty]: Start isEmpty. Operand 75195 states and 101202 transitions. [2018-09-10 12:50:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-10 12:50:43,252 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:50:43,252 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:50:43,253 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:50:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash -127797574, now seen corresponding path program 1 times [2018-09-10 12:50:43,253 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:50:43,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:50:43,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:50:43,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:50:43,255 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:50:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:50:43,526 WARN L175 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:50:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 76 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:50:44,470 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:50:44,470 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:50:44,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:50:44,485 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:50:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:50:44,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:50:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:50:45,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:50:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 76 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:50:45,286 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:50:45,286 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 12:50:45,286 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:50:45,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:50:45,287 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:50:45,288 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:50:45,288 INFO L87 Difference]: Start difference. First operand 75195 states and 101202 transitions. Second operand 5 states. [2018-09-10 12:51:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:51:06,534 INFO L93 Difference]: Finished difference Result 170618 states and 244593 transitions. [2018-09-10 12:51:06,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:51:06,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-09-10 12:51:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:51:06,848 INFO L225 Difference]: With dead ends: 170618 [2018-09-10 12:51:06,848 INFO L226 Difference]: Without dead ends: 95429 [2018-09-10 12:51:06,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 426 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:51:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95429 states. [2018-09-10 12:51:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95429 to 94027. [2018-09-10 12:51:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94027 states. [2018-09-10 12:51:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94027 states to 94027 states and 124580 transitions. [2018-09-10 12:51:08,956 INFO L78 Accepts]: Start accepts. Automaton has 94027 states and 124580 transitions. Word has length 216 [2018-09-10 12:51:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:51:08,956 INFO L480 AbstractCegarLoop]: Abstraction has 94027 states and 124580 transitions. [2018-09-10 12:51:08,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:51:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand 94027 states and 124580 transitions. [2018-09-10 12:51:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2018-09-10 12:51:08,996 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:51:08,997 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:51:08,997 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:51:08,998 INFO L82 PathProgramCache]: Analyzing trace with hash 559104308, now seen corresponding path program 1 times [2018-09-10 12:51:08,998 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:51:08,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:51:08,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:51:08,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:51:09,000 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:51:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:51:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 329 proven. 89 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 12:51:10,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:51:10,780 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:51:10,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:51:10,788 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:51:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:51:11,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:51:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 465 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:51:11,813 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:51:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 329 proven. 89 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 12:51:13,069 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:51:13,069 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:51:13,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:51:13,086 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:51:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:51:13,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:51:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 465 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:51:14,431 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:51:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 329 proven. 89 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 12:51:15,371 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:51:15,372 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-10 12:51:15,372 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:51:15,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:51:15,374 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:51:15,375 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-10 12:51:15,375 INFO L87 Difference]: Start difference. First operand 94027 states and 124580 transitions. Second operand 9 states. Received shutdown request... [2018-09-10 12:51:26,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-10 12:51:26,214 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:51:26,218 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:51:26,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:51:26 BoogieIcfgContainer [2018-09-10 12:51:26,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:51:26,219 INFO L168 Benchmark]: Toolchain (without parser) took 233747.07 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 1.5 GB in the end (delta: -137.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-10 12:51:26,220 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:51:26,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4222.76 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 215.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -134.9 MB). Peak memory consumption was 489.9 MB. Max. memory is 7.1 GB. [2018-09-10 12:51:26,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 313.92 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 65.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 7.1 GB. [2018-09-10 12:51:26,223 INFO L168 Benchmark]: Boogie Preprocessor took 1789.74 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 845.7 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -853.7 MB). Peak memory consumption was 126.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:51:26,224 INFO L168 Benchmark]: RCFGBuilder took 22981.58 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 275.3 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 229.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-10 12:51:26,224 INFO L168 Benchmark]: TraceAbstraction took 204431.78 ms. Allocated memory was 2.9 GB in the beginning and 3.8 GB in the end (delta: 873.5 MB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 556.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-10 12:51:26,230 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 4222.76 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 215.5 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -134.9 MB). Peak memory consumption was 489.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 313.92 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 65.5 MB). Peak memory consumption was 65.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1789.74 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 845.7 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -853.7 MB). Peak memory consumption was 126.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 22981.58 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 275.3 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 229.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 204431.78 ms. Allocated memory was 2.9 GB in the beginning and 3.8 GB in the end (delta: 873.5 MB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 556.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (94027states) and FLOYD_HOARE automaton (currently 14 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (23679 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 204.3s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 186.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3533 SDtfs, 42218 SDslu, 4914 SDs, 0 SdLazy, 65785 SolverSat, 15712 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 162.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4670 GetRequests, 4598 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94027occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 3536 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 4073 NumberOfCodeBlocks, 4073 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 6358 ConstructedInterpolants, 0 QuantifiedInterpolants, 8300736 SizeOfPredicates, 4 NumberOfNonLiveVariables, 3334 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 2992/3529 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label37_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-51-26-248.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label37_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-51-26-248.csv Completed graceful shutdown