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/Problem19_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:41:01,345 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:41:01,347 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:41:01,359 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:41:01,360 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:41:01,361 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:41:01,362 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:41:01,364 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:41:01,366 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:41:01,366 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:41:01,367 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:41:01,368 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:41:01,369 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:41:01,369 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:41:01,371 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:41:01,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:41:01,372 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:41:01,374 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:41:01,376 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:41:01,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:41:01,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:41:01,380 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:41:01,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:41:01,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:41:01,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:41:01,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:41:01,385 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:41:01,386 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:41:01,387 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:41:01,388 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:41:01,388 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:41:01,389 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:41:01,389 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:41:01,390 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:41:01,391 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:41:01,391 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:41:01,392 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:41:01,416 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:41:01,416 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:41:01,418 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:41:01,418 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:41:01,418 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:41:01,418 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:41:01,418 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:41:01,419 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:41:01,419 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:41:01,419 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:41:01,419 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:41:01,420 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:41:01,421 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:41:01,421 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:41:01,421 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:41:01,421 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:41:01,422 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:41:01,422 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:41:01,423 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:41:01,423 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:41:01,423 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:41:01,423 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:41:01,423 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:41:01,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:41:01,424 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:41:01,424 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:41:01,424 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:41:01,425 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:41:01,425 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:41:01,425 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:41:01,425 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:41:01,426 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:41:01,426 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:41:01,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:41:01,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:41:01,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:41:01,512 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:41:01,512 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:41:01,513 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c [2018-07-24 12:41:01,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b7263b6/e5e8a0b7c3614157975db34491c54829/FLAG4a914d86d [2018-07-24 12:41:02,474 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:41:02,477 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c [2018-07-24 12:41:02,532 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b7263b6/e5e8a0b7c3614157975db34491c54829/FLAG4a914d86d [2018-07-24 12:41:02,553 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b7263b6/e5e8a0b7c3614157975db34491c54829 [2018-07-24 12:41:02,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:41:02,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:41:02,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:41:02,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:41:02,581 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:41:02,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:41:02" (1/1) ... [2018-07-24 12:41:02,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bcc68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:02, skipping insertion in model container [2018-07-24 12:41:02,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:41:02" (1/1) ... [2018-07-24 12:41:03,073 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:41:04,869 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:41:04,897 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:41:06,111 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:41:06,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06 WrapperNode [2018-07-24 12:41:06,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:41:06,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:41:06,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:41:06,636 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:41:06,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:06,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:06,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:41:06,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:41:06,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:41:06,980 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:41:08,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:08,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:08,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:08,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:08,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:08,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:08,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... [2018-07-24 12:41:08,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:41:08,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:41:08,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:41:08,631 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:41:08,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:41:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:41:08,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:41:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:41:08,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:41:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:41:08,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:41:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-24 12:41:08,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-24 12:41:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:41:08,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:41:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:41:08,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:41:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:41:08,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:41:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output6 [2018-07-24 12:41:08,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output6 [2018-07-24 12:41:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:41:08,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:41:28,064 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:41:28,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:41:28 BoogieIcfgContainer [2018-07-24 12:41:28,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:41:28,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:41:28,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:41:28,069 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:41:28,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:41:02" (1/3) ... [2018-07-24 12:41:28,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2401000e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:41:28, skipping insertion in model container [2018-07-24 12:41:28,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:41:06" (2/3) ... [2018-07-24 12:41:28,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2401000e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:41:28, skipping insertion in model container [2018-07-24 12:41:28,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:41:28" (3/3) ... [2018-07-24 12:41:28,073 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label51_false-unreach-call.c [2018-07-24 12:41:28,083 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:41:28,095 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:41:28,166 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:41:28,167 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:41:28,167 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:41:28,167 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:41:28,167 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:41:28,167 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:41:28,168 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:41:28,168 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:41:28,168 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:41:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 12:41:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-24 12:41:28,228 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:41:28,229 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] [2018-07-24 12:41:28,229 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:41:28,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1652453714, now seen corresponding path program 1 times [2018-07-24 12:41:28,238 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:41:28,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:28,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:41:28,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:28,294 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:41:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:41:28,730 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-07-24 12:41:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:41:28,740 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:41:28,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:41:28,741 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:41:28,747 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:41:28,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:41:28,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:41:28,767 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-07-24 12:41:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:41:59,018 INFO L93 Difference]: Finished difference Result 6510 states and 12381 transitions. [2018-07-24 12:41:59,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:41:59,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-07-24 12:41:59,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:41:59,086 INFO L225 Difference]: With dead ends: 6510 [2018-07-24 12:41:59,086 INFO L226 Difference]: Without dead ends: 4726 [2018-07-24 12:41:59,104 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:41:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-07-24 12:41:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4687. [2018-07-24 12:41:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2018-07-24 12:41:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7413 transitions. [2018-07-24 12:41:59,338 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7413 transitions. Word has length 24 [2018-07-24 12:41:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:41:59,338 INFO L471 AbstractCegarLoop]: Abstraction has 4687 states and 7413 transitions. [2018-07-24 12:41:59,339 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:41:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7413 transitions. [2018-07-24 12:41:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-24 12:41:59,344 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:41:59,345 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:41:59,345 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:41:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash 377159747, now seen corresponding path program 1 times [2018-07-24 12:41:59,345 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:41:59,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:59,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:41:59,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:59,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:41:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:41:59,726 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:42:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:42:00,093 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:42:00,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:42:00,093 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:42:00,095 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:42:00,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:42:00,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:42:00,096 INFO L87 Difference]: Start difference. First operand 4687 states and 7413 transitions. Second operand 6 states. [2018-07-24 12:42:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:42:31,392 INFO L93 Difference]: Finished difference Result 17857 states and 28865 transitions. [2018-07-24 12:42:31,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:42:31,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-07-24 12:42:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:42:31,464 INFO L225 Difference]: With dead ends: 17857 [2018-07-24 12:42:31,465 INFO L226 Difference]: Without dead ends: 13176 [2018-07-24 12:42:31,486 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 12:42:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2018-07-24 12:42:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 13105. [2018-07-24 12:42:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13105 states. [2018-07-24 12:42:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 18702 transitions. [2018-07-24 12:42:31,809 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 18702 transitions. Word has length 96 [2018-07-24 12:42:31,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:42:31,809 INFO L471 AbstractCegarLoop]: Abstraction has 13105 states and 18702 transitions. [2018-07-24 12:42:31,809 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:42:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 18702 transitions. [2018-07-24 12:42:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-07-24 12:42:31,818 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:42:31,818 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:42:31,819 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:42:31,819 INFO L82 PathProgramCache]: Analyzing trace with hash -488642086, now seen corresponding path program 1 times [2018-07-24 12:42:31,819 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:42:31,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:42:31,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:42:31,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:42:31,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:42:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:42:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:42:32,296 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:42:32,296 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:42:32,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:42:32,297 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:42:32,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:42:32,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:42:32,298 INFO L87 Difference]: Start difference. First operand 13105 states and 18702 transitions. Second operand 6 states. [2018-07-24 12:42:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:42:59,392 INFO L93 Difference]: Finished difference Result 39826 states and 58176 transitions. [2018-07-24 12:42:59,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:42:59,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-07-24 12:42:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:42:59,504 INFO L225 Difference]: With dead ends: 39826 [2018-07-24 12:42:59,504 INFO L226 Difference]: Without dead ends: 26727 [2018-07-24 12:42:59,546 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:42:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26727 states. [2018-07-24 12:43:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26727 to 26503. [2018-07-24 12:43:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26503 states. [2018-07-24 12:43:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26503 states to 26503 states and 37449 transitions. [2018-07-24 12:43:00,148 INFO L78 Accepts]: Start accepts. Automaton has 26503 states and 37449 transitions. Word has length 98 [2018-07-24 12:43:00,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:43:00,149 INFO L471 AbstractCegarLoop]: Abstraction has 26503 states and 37449 transitions. [2018-07-24 12:43:00,149 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:43:00,149 INFO L276 IsEmpty]: Start isEmpty. Operand 26503 states and 37449 transitions. [2018-07-24 12:43:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-24 12:43:00,160 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:43:00,160 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:43:00,160 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:43:00,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1825562219, now seen corresponding path program 1 times [2018-07-24 12:43:00,161 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:43:00,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:00,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:43:00,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:00,163 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:43:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:43:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:43:00,487 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:43:00,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:43:00,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:43:00,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:43:00,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:43:00,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:43:00,489 INFO L87 Difference]: Start difference. First operand 26503 states and 37449 transitions. Second operand 5 states. [2018-07-24 12:43:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:43:31,646 INFO L93 Difference]: Finished difference Result 80693 states and 117176 transitions. [2018-07-24 12:43:31,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:43:31,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-07-24 12:43:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:43:31,812 INFO L225 Difference]: With dead ends: 80693 [2018-07-24 12:43:31,812 INFO L226 Difference]: Without dead ends: 54196 [2018-07-24 12:43:31,877 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:43:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54196 states. [2018-07-24 12:43:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54196 to 53453. [2018-07-24 12:43:32,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53453 states. [2018-07-24 12:43:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53453 states to 53453 states and 69677 transitions. [2018-07-24 12:43:32,883 INFO L78 Accepts]: Start accepts. Automaton has 53453 states and 69677 transitions. Word has length 126 [2018-07-24 12:43:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:43:32,884 INFO L471 AbstractCegarLoop]: Abstraction has 53453 states and 69677 transitions. [2018-07-24 12:43:32,884 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:43:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 53453 states and 69677 transitions. [2018-07-24 12:43:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-07-24 12:43:32,889 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:43:32,889 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:43:32,890 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:43:32,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1686470604, now seen corresponding path program 1 times [2018-07-24 12:43:32,890 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:43:32,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:32,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:43:32,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:32,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:43:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:43:33,165 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:43:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:43:33,504 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:43:33,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:43:33,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:43:33,505 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:43:33,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:43:33,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:43:33,505 INFO L87 Difference]: Start difference. First operand 53453 states and 69677 transitions. Second operand 6 states. [2018-07-24 12:43:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:43:51,587 INFO L93 Difference]: Finished difference Result 125508 states and 169427 transitions. [2018-07-24 12:43:51,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:43:51,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-07-24 12:43:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:43:51,828 INFO L225 Difference]: With dead ends: 125508 [2018-07-24 12:43:51,828 INFO L226 Difference]: Without dead ends: 72061 [2018-07-24 12:43:51,919 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:43:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72061 states. [2018-07-24 12:43:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72061 to 71650. [2018-07-24 12:43:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71650 states. [2018-07-24 12:43:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71650 states to 71650 states and 93001 transitions. [2018-07-24 12:43:53,116 INFO L78 Accepts]: Start accepts. Automaton has 71650 states and 93001 transitions. Word has length 189 [2018-07-24 12:43:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:43:53,117 INFO L471 AbstractCegarLoop]: Abstraction has 71650 states and 93001 transitions. [2018-07-24 12:43:53,117 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:43:53,117 INFO L276 IsEmpty]: Start isEmpty. Operand 71650 states and 93001 transitions. [2018-07-24 12:43:53,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2018-07-24 12:43:53,132 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:43:53,133 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:43:53,133 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:43:53,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1919630288, now seen corresponding path program 1 times [2018-07-24 12:43:53,134 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:43:53,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:53,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:43:53,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:53,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:43:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:43:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:43:54,343 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:43:54,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:43:54,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:43:54,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:43:54,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:43:54,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:43:54,346 INFO L87 Difference]: Start difference. First operand 71650 states and 93001 transitions. Second operand 4 states. [2018-07-24 12:44:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:44:17,004 INFO L93 Difference]: Finished difference Result 264574 states and 367194 transitions. [2018-07-24 12:44:17,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:44:17,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 618 [2018-07-24 12:44:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:44:17,425 INFO L225 Difference]: With dead ends: 264574 [2018-07-24 12:44:17,426 INFO L226 Difference]: Without dead ends: 192930 [2018-07-24 12:44:17,556 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:44:17,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192930 states. [2018-07-24 12:44:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192930 to 192746. [2018-07-24 12:44:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192746 states. [2018-07-24 12:44:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192746 states to 192746 states and 252609 transitions. [2018-07-24 12:44:21,130 INFO L78 Accepts]: Start accepts. Automaton has 192746 states and 252609 transitions. Word has length 618 [2018-07-24 12:44:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:44:21,131 INFO L471 AbstractCegarLoop]: Abstraction has 192746 states and 252609 transitions. [2018-07-24 12:44:21,131 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:44:21,131 INFO L276 IsEmpty]: Start isEmpty. Operand 192746 states and 252609 transitions. [2018-07-24 12:44:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2018-07-24 12:44:21,163 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:44:21,164 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:44:21,164 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:44:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1568291915, now seen corresponding path program 1 times [2018-07-24 12:44:21,165 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:44:21,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:44:21,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:44:21,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:44:21,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:44:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:44:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-07-24 12:44:21,966 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:44:21,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:44:21,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:44:21,968 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:44:21,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:44:21,968 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:44:21,968 INFO L87 Difference]: Start difference. First operand 192746 states and 252609 transitions. Second operand 4 states. [2018-07-24 12:44:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:44:46,447 INFO L93 Difference]: Finished difference Result 436479 states and 582723 transitions. [2018-07-24 12:44:46,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:44:46,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 836 [2018-07-24 12:44:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:44:47,127 INFO L225 Difference]: With dead ends: 436479 [2018-07-24 12:44:47,128 INFO L226 Difference]: Without dead ends: 243739 [2018-07-24 12:44:47,353 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:44:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243739 states. [2018-07-24 12:44:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243739 to 243694. [2018-07-24 12:44:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243694 states. [2018-07-24 12:44:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243694 states to 243694 states and 302820 transitions. [2018-07-24 12:44:51,694 INFO L78 Accepts]: Start accepts. Automaton has 243694 states and 302820 transitions. Word has length 836 [2018-07-24 12:44:51,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:44:51,695 INFO L471 AbstractCegarLoop]: Abstraction has 243694 states and 302820 transitions. [2018-07-24 12:44:51,695 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:44:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 243694 states and 302820 transitions. [2018-07-24 12:44:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2018-07-24 12:44:51,752 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:44:51,753 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:44:51,754 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:44:51,754 INFO L82 PathProgramCache]: Analyzing trace with hash -755505580, now seen corresponding path program 1 times [2018-07-24 12:44:51,754 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:44:51,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:44:51,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:44:51,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:44:51,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:44:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-24 12:45:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-07-24 12:45:00,793 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:45:00,796 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:45:00,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:45:00,816 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:45:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:45:01,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:45:01,284 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:45:01,485 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:45:01,486 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:45:01,492 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:45:01,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:45:01 BoogieIcfgContainer [2018-07-24 12:45:01,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:45:01,494 INFO L168 Benchmark]: Toolchain (without parser) took 238925.51 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 12:45:01,497 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:45:01,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4063.32 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 187.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -113.1 MB). Peak memory consumption was 487.9 MB. Max. memory is 7.1 GB. [2018-07-24 12:45:01,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 344.40 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:45:01,499 INFO L168 Benchmark]: Boogie Preprocessor took 1649.90 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 851.4 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -871.3 MB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:45:01,500 INFO L168 Benchmark]: RCFGBuilder took 19434.85 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 248.0 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 298.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 12:45:01,501 INFO L168 Benchmark]: TraceAbstraction took 213427.30 ms. Allocated memory was 2.8 GB in the beginning and 4.7 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -850.3 MB). Peak memory consumption was 994.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:45:01,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4063.32 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 187.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -113.1 MB). Peak memory consumption was 487.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 344.40 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1649.90 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 851.4 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -871.3 MB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19434.85 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 248.0 MB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 298.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 213427.30 ms. Allocated memory was 2.8 GB in the beginning and 4.7 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -850.3 MB). Peak memory consumption was 994.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 67). Cancelled while BasicCegarLoop was analyzing trace of length 978 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 213.3s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 187.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6206 SDtfs, 36149 SDslu, 4861 SDs, 0 SdLazy, 66655 SolverSat, 16280 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243694occurred in iteration=7, 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: 11.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 1717 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1987 NumberOfCodeBlocks, 1987 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1980 ConstructedInterpolants, 0 QuantifiedInterpolants, 1474284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 435/435 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_label51_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-45-01-524.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label51_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-45-01-524.csv Completed graceful shutdown