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_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:43:33,476 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:43:33,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:43:33,489 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:43:33,490 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:43:33,491 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:43:33,492 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:43:33,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:43:33,496 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:43:33,497 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:43:33,497 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:43:33,498 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:43:33,499 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:43:33,500 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:43:33,501 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:43:33,502 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:43:33,502 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:43:33,506 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:43:33,508 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:43:33,510 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:43:33,511 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:43:33,512 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:43:33,515 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:43:33,515 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:43:33,515 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:43:33,516 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:43:33,517 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:43:33,518 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:43:33,518 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:43:33,523 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:43:33,523 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:43:33,524 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:43:33,524 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:43:33,524 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:43:33,527 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:43:33,528 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:43:33,528 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 12:43:33,558 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:43:33,558 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:43:33,560 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:43:33,560 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:43:33,560 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:43:33,560 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:43:33,560 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:43:33,561 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:43:33,561 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:43:33,561 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:43:33,561 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:43:33,562 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:43:33,563 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:43:33,563 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:43:33,563 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:43:33,563 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:43:33,563 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:43:33,563 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:43:33,564 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:43:33,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:43:33,564 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:43:33,564 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:43:33,564 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:43:33,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:43:33,565 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:43:33,565 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:43:33,565 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:43:33,565 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:43:33,567 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:43:33,568 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:43:33,568 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:43:33,568 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:43:33,568 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:43:33,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:43:33,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:43:33,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:43:33,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:43:33,653 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:43:33,654 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c [2018-09-10 12:43:33,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9c5ac3d/cbcbf46e3fd04f6fb938eacfcda40b5b/FLAG88a473c09 [2018-09-10 12:43:34,567 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:43:34,568 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c [2018-09-10 12:43:34,618 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9c5ac3d/cbcbf46e3fd04f6fb938eacfcda40b5b/FLAG88a473c09 [2018-09-10 12:43:34,634 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a9c5ac3d/cbcbf46e3fd04f6fb938eacfcda40b5b [2018-09-10 12:43:34,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:43:34,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:43:34,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:43:34,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:43:34,656 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:43:34,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:43:34" (1/1) ... [2018-09-10 12:43:34,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7598abde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:34, skipping insertion in model container [2018-09-10 12:43:34,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:43:34" (1/1) ... [2018-09-10 12:43:35,150 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:43:36,799 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:43:36,820 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:43:38,067 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:43:38,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38 WrapperNode [2018-09-10 12:43:38,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:43:38,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:43:38,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:43:38,838 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:43:38,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:39,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:39,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:43:39,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:43:39,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:43:39,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:43:40,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:40,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:40,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:40,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:40,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:40,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:40,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (1/1) ... [2018-09-10 12:43:40,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:43:40,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:43:40,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:43:40,926 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:43:40,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (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 12:43:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:43:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:43:40,987 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 12:43:40,987 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 12:43:40,987 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 12:43:40,988 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 12:43:40,988 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 12:43:40,988 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 12:43:40,988 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 12:43:40,988 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 12:43:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:43:40,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:43:40,989 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 12:43:40,989 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 12:43:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:43:40,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:43:40,990 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 12:43:40,990 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 12:44:05,414 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:44:05,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:44:05 BoogieIcfgContainer [2018-09-10 12:44:05,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:44:05,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:44:05,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:44:05,420 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:44:05,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:43:34" (1/3) ... [2018-09-10 12:44:05,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4278257a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:44:05, skipping insertion in model container [2018-09-10 12:44:05,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:43:38" (2/3) ... [2018-09-10 12:44:05,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4278257a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:44:05, skipping insertion in model container [2018-09-10 12:44:05,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:44:05" (3/3) ... [2018-09-10 12:44:05,424 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label08_true-unreach-call.c [2018-09-10 12:44:05,434 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:44:05,445 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:44:05,529 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:44:05,530 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:44:05,530 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:44:05,530 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:44:05,530 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:44:05,530 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:44:05,531 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:44:05,531 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:44:05,531 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:44:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-10 12:44:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-10 12:44:05,597 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:44:05,598 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] [2018-09-10 12:44:05,599 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 12:44:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash -644879042, now seen corresponding path program 1 times [2018-09-10 12:44:05,606 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:44:05,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:44:05,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:44:05,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:44:05,662 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:44:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:44:06,107 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-10 12:44:06,119 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 12:44:06,121 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:44:06,122 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:44:06,122 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:44:06,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:44:06,143 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:44:06,144 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:44:06,147 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-09-10 12:44:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:44:31,771 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-09-10 12:44:31,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:44:31,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-09-10 12:44:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:44:31,836 INFO L225 Difference]: With dead ends: 6465 [2018-09-10 12:44:31,837 INFO L226 Difference]: Without dead ends: 4681 [2018-09-10 12:44:31,854 INFO L604 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 [2018-09-10 12:44:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-09-10 12:44:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-09-10 12:44:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-09-10 12:44:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-09-10 12:44:32,064 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 44 [2018-09-10 12:44:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:44:32,065 INFO L480 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-09-10 12:44:32,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:44:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-09-10 12:44:32,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-10 12:44:32,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:44:32,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:32,073 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 12:44:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2117596845, now seen corresponding path program 1 times [2018-09-10 12:44:32,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:44:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:44:32,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:44:32,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:44:32,075 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:44:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:44:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:44:32,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:44:32,597 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:44:32,597 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:44:32,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:44:32,600 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:44:32,600 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:44:32,600 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-09-10 12:45:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:45:06,952 INFO L93 Difference]: Finished difference Result 9649 states and 15539 transitions. [2018-09-10 12:45:06,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:45:06,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-09-10 12:45:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:45:06,993 INFO L225 Difference]: With dead ends: 9649 [2018-09-10 12:45:06,993 INFO L226 Difference]: Without dead ends: 6455 [2018-09-10 12:45:07,003 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:45:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6455 states. [2018-09-10 12:45:07,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 6345. [2018-09-10 12:45:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6345 states. [2018-09-10 12:45:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 8983 transitions. [2018-09-10 12:45:07,176 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 8983 transitions. Word has length 116 [2018-09-10 12:45:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:45:07,178 INFO L480 AbstractCegarLoop]: Abstraction has 6345 states and 8983 transitions. [2018-09-10 12:45:07,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:45:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 8983 transitions. [2018-09-10 12:45:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-10 12:45:07,187 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:45:07,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:07,189 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 12:45:07,190 INFO L82 PathProgramCache]: Analyzing trace with hash -782035094, now seen corresponding path program 1 times [2018-09-10 12:45:07,190 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:45:07,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:45:07,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:45:07,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:45:07,191 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:45:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:45:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:45:07,503 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:45:07,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:45:07,503 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:45:07,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:45:07,504 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:45:07,504 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:45:07,504 INFO L87 Difference]: Start difference. First operand 6345 states and 8983 transitions. Second operand 6 states. [2018-09-10 12:45:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:45:35,410 INFO L93 Difference]: Finished difference Result 24592 states and 35798 transitions. [2018-09-10 12:45:35,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:45:35,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-09-10 12:45:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:45:35,471 INFO L225 Difference]: With dead ends: 24592 [2018-09-10 12:45:35,471 INFO L226 Difference]: Without dead ends: 18253 [2018-09-10 12:45:35,500 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 12:45:35,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18253 states. [2018-09-10 12:45:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18253 to 18015. [2018-09-10 12:45:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18015 states. [2018-09-10 12:45:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18015 states to 18015 states and 24367 transitions. [2018-09-10 12:45:35,969 INFO L78 Accepts]: Start accepts. Automaton has 18015 states and 24367 transitions. Word has length 118 [2018-09-10 12:45:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:45:35,970 INFO L480 AbstractCegarLoop]: Abstraction has 18015 states and 24367 transitions. [2018-09-10 12:45:35,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:45:35,972 INFO L276 IsEmpty]: Start isEmpty. Operand 18015 states and 24367 transitions. [2018-09-10 12:45:35,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-10 12:45:35,974 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:45:35,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:35,974 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 12:45:35,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1055799919, now seen corresponding path program 1 times [2018-09-10 12:45:35,975 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:45:35,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:45:35,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:45:35,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:45:35,980 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:45:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:45:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:45:36,291 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:45:36,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:45:36,291 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:45:36,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:45:36,292 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:45:36,292 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:45:36,293 INFO L87 Difference]: Start difference. First operand 18015 states and 24367 transitions. Second operand 5 states. [2018-09-10 12:46:00,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:46:00,542 INFO L93 Difference]: Finished difference Result 54710 states and 75542 transitions. [2018-09-10 12:46:00,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:46:00,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-09-10 12:46:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:46:00,651 INFO L225 Difference]: With dead ends: 54710 [2018-09-10 12:46:00,651 INFO L226 Difference]: Without dead ends: 36701 [2018-09-10 12:46:00,697 INFO L604 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 [2018-09-10 12:46:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36701 states. [2018-09-10 12:46:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36701 to 36229. [2018-09-10 12:46:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36229 states. [2018-09-10 12:46:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36229 states to 36229 states and 47833 transitions. [2018-09-10 12:46:01,405 INFO L78 Accepts]: Start accepts. Automaton has 36229 states and 47833 transitions. Word has length 126 [2018-09-10 12:46:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:46:01,405 INFO L480 AbstractCegarLoop]: Abstraction has 36229 states and 47833 transitions. [2018-09-10 12:46:01,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:46:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 36229 states and 47833 transitions. [2018-09-10 12:46:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-09-10 12:46:01,414 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:46:01,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:01,415 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 12:46:01,415 INFO L82 PathProgramCache]: Analyzing trace with hash -875080436, now seen corresponding path program 1 times [2018-09-10 12:46:01,415 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:46:01,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:46:01,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:46:01,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:46:01,416 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:46:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:46:01,772 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:46:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:46:02,216 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:46:02,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:46:02,216 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:46:02,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:46:02,219 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:46:02,219 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:46:02,220 INFO L87 Difference]: Start difference. First operand 36229 states and 47833 transitions. Second operand 6 states. [2018-09-10 12:46:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:46:32,853 INFO L93 Difference]: Finished difference Result 100287 states and 136707 transitions. [2018-09-10 12:46:32,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:46:32,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-09-10 12:46:32,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:46:33,025 INFO L225 Difference]: With dead ends: 100287 [2018-09-10 12:46:33,025 INFO L226 Difference]: Without dead ends: 64064 [2018-09-10 12:46:33,107 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:46:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64064 states. [2018-09-10 12:46:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64064 to 63557. [2018-09-10 12:46:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63557 states. [2018-09-10 12:46:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63557 states to 63557 states and 83753 transitions. [2018-09-10 12:46:34,505 INFO L78 Accepts]: Start accepts. Automaton has 63557 states and 83753 transitions. Word has length 209 [2018-09-10 12:46:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:46:34,506 INFO L480 AbstractCegarLoop]: Abstraction has 63557 states and 83753 transitions. [2018-09-10 12:46:34,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:46:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 63557 states and 83753 transitions. [2018-09-10 12:46:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-10 12:46:34,519 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:46:34,519 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, 2, 2, 2, 2, 2, 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 12:46:34,520 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 12:46:34,520 INFO L82 PathProgramCache]: Analyzing trace with hash 544249999, now seen corresponding path program 1 times [2018-09-10 12:46:34,520 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:46:34,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:46:34,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:46:34,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:46:34,522 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:46:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:46:34,802 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:46:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 111 proven. 159 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-09-10 12:46:35,001 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:46:35,001 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 12:46:35,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:46:35,010 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:46:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:46:35,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:46:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-09-10 12:46:35,430 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:46:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-09-10 12:46:35,859 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:46:35,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-10 12:46:35,860 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:46:35,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:46:35,862 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:46:35,862 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:46:35,863 INFO L87 Difference]: Start difference. First operand 63557 states and 83753 transitions. Second operand 3 states. [2018-09-10 12:46:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:46:51,349 INFO L93 Difference]: Finished difference Result 139095 states and 187471 transitions. [2018-09-10 12:46:51,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:46:51,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2018-09-10 12:46:51,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:46:51,758 INFO L225 Difference]: With dead ends: 139095 [2018-09-10 12:46:51,758 INFO L226 Difference]: Without dead ends: 75544 [2018-09-10 12:46:51,969 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 683 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:46:52,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75544 states. [2018-09-10 12:46:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75544 to 75391. [2018-09-10 12:46:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75391 states. [2018-09-10 12:46:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75391 states to 75391 states and 97208 transitions. [2018-09-10 12:46:53,754 INFO L78 Accepts]: Start accepts. Automaton has 75391 states and 97208 transitions. Word has length 342 [2018-09-10 12:46:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:46:53,755 INFO L480 AbstractCegarLoop]: Abstraction has 75391 states and 97208 transitions. [2018-09-10 12:46:53,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:46:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 75391 states and 97208 transitions. [2018-09-10 12:46:53,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-09-10 12:46:53,774 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:46:53,774 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:46:53,774 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 12:46:53,775 INFO L82 PathProgramCache]: Analyzing trace with hash -836130793, now seen corresponding path program 1 times [2018-09-10 12:46:53,775 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:46:53,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:46:53,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:46:53,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:46:53,776 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:46:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:46:54,077 WARN L175 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:46:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 74 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:46:54,541 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:46:54,542 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 12:46:54,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:46:54,557 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:46:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:46:54,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:46:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-10 12:46:54,837 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:46:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 74 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:46:55,190 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:46:55,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 12:46:55,190 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:46:55,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:46:55,191 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:46:55,191 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:46:55,193 INFO L87 Difference]: Start difference. First operand 75391 states and 97208 transitions. Second operand 5 states. [2018-09-10 12:47:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:47:14,299 INFO L93 Difference]: Finished difference Result 196442 states and 270075 transitions. [2018-09-10 12:47:14,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:47:14,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2018-09-10 12:47:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:47:14,714 INFO L225 Difference]: With dead ends: 196442 [2018-09-10 12:47:14,714 INFO L226 Difference]: Without dead ends: 121057 [2018-09-10 12:47:14,860 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 684 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:47:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121057 states. [2018-09-10 12:47:17,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121057 to 119905. [2018-09-10 12:47:17,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119905 states. [2018-09-10 12:47:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119905 states to 119905 states and 159595 transitions. [2018-09-10 12:47:17,740 INFO L78 Accepts]: Start accepts. Automaton has 119905 states and 159595 transitions. Word has length 345 [2018-09-10 12:47:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:47:17,740 INFO L480 AbstractCegarLoop]: Abstraction has 119905 states and 159595 transitions. [2018-09-10 12:47:17,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:47:17,740 INFO L276 IsEmpty]: Start isEmpty. Operand 119905 states and 159595 transitions. [2018-09-10 12:47:17,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-09-10 12:47:17,756 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:47:17,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:17,756 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:47:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2072910471, now seen corresponding path program 1 times [2018-09-10 12:47:17,757 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:47:17,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:47:17,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:47:17,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:47:17,758 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:47:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:47:18,239 WARN L175 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:47:18,575 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 12:47:18,575 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:47:18,575 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 12:47:18,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:47:18,584 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:47:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:47:18,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:47:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:47:18,930 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:47:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:47:20,187 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:47:20,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-09-10 12:47:20,188 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:47:20,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:47:20,189 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:47:20,189 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:47:20,189 INFO L87 Difference]: Start difference. First operand 119905 states and 159595 transitions. Second operand 3 states. Received shutdown request... [2018-09-10 12:47:26,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:47:26,452 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:47:26,458 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:47:26,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:47:26 BoogieIcfgContainer [2018-09-10 12:47:26,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:47:26,460 INFO L168 Benchmark]: Toolchain (without parser) took 231814.39 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -286.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-10 12:47:26,461 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:47:26,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4188.44 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 210.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -127.4 MB). Peak memory consumption was 493.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:47:26,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 305.56 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: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:47:26,463 INFO L168 Benchmark]: Boogie Preprocessor took 1781.64 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 854.6 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -862.1 MB). Peak memory consumption was 125.5 MB. Max. memory is 7.1 GB. [2018-09-10 12:47:26,464 INFO L168 Benchmark]: RCFGBuilder took 24489.76 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 268.4 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 258.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-10 12:47:26,465 INFO L168 Benchmark]: TraceAbstraction took 201042.58 ms. Allocated memory was 2.9 GB in the beginning and 3.7 GB in the end (delta: 815.3 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 381.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-10 12:47:26,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4188.44 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 210.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -127.4 MB). Peak memory consumption was 493.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 305.56 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: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1781.64 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 854.6 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -862.1 MB). Peak memory consumption was 125.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 24489.76 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 268.4 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 258.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 201042.58 ms. Allocated memory was 2.9 GB in the beginning and 3.7 GB in the end (delta: 815.3 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 381.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 127). Cancelled while BasicCegarLoop was constructing difference of abstraction (119905states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (76605 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 200.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 185.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7894 SDtfs, 40041 SDslu, 5241 SDs, 0 SdLazy, 66699 SolverSat, 20826 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 159.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2503 GetRequests, 2444 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119905occurred 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: 7.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 4113 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 3049 NumberOfCodeBlocks, 3049 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4253 ConstructedInterpolants, 0 QuantifiedInterpolants, 3365172 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1870 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 1448/1828 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_label08_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-47-26-487.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label08_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-47-26-487.csv Completed graceful shutdown