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_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:15:18,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:15:18,535 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:15:18,548 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:15:18,548 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:15:18,549 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:15:18,551 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:15:18,552 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:15:18,554 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:15:18,555 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:15:18,556 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:15:18,556 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:15:18,557 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:15:18,558 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:15:18,559 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:15:18,559 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:15:18,560 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:15:18,564 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:15:18,570 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:15:18,574 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:15:18,576 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:15:18,579 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:15:18,582 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:15:18,585 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:15:18,585 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:15:18,586 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:15:18,587 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:15:18,588 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:15:18,588 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:15:18,592 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:15:18,592 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:15:18,594 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:15:18,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:15:18,595 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:15:18,596 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:15:18,597 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:15:18,597 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 15:15:18,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:15:18,612 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:15:18,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:15:18,613 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:15:18,613 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:15:18,613 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:15:18,614 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:15:18,614 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:15:18,614 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:15:18,614 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:15:18,614 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:15:18,615 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:15:18,615 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:15:18,615 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:15:18,615 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:15:18,616 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:15:18,616 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:15:18,616 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:15:18,616 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:15:18,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:15:18,617 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:15:18,617 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:15:18,617 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:15:18,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:15:18,617 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:15:18,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:15:18,618 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:15:18,618 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:15:18,618 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:15:18,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:15:18,619 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:15:18,619 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:15:18,619 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:15:18,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:15:18,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:15:18,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:15:18,706 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:15:18,706 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:15:18,707 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c [2018-07-24 15:15:19,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f8efa0da/741e646231e84d6cb9d79f83a546e739/FLAGff657abc3 [2018-07-24 15:15:19,692 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:15:19,693 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c [2018-07-24 15:15:19,747 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f8efa0da/741e646231e84d6cb9d79f83a546e739/FLAGff657abc3 [2018-07-24 15:15:19,769 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f8efa0da/741e646231e84d6cb9d79f83a546e739 [2018-07-24 15:15:19,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:15:19,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:15:19,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:15:19,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:15:19,795 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:15:19,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:15:19" (1/1) ... [2018-07-24 15:15:19,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654bd90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:19, skipping insertion in model container [2018-07-24 15:15:19,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:15:19" (1/1) ... [2018-07-24 15:15:20,231 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:15:21,864 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:15:21,881 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:15:22,994 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:15:23,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23 WrapperNode [2018-07-24 15:15:23,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:15:23,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:15:23,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:15:23,585 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:15:23,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:23,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:23,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:15:23,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:15:23,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:15:23,951 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:15:25,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:25,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:25,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:25,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:25,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:25,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:25,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (1/1) ... [2018-07-24 15:15:25,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:15:25,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:15:25,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:15:25,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:15:25,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (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 15:15:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:15:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:15:25,654 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 [2018-07-24 15:15:25,654 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 [2018-07-24 15:15:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 15:15:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 15:15:25,655 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 [2018-07-24 15:15:25,655 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 [2018-07-24 15:15:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 15:15:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 15:15:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:15:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:15:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 15:15:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 15:15:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:15:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:15:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 15:15:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 15:15:46,253 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:15:46,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:15:46 BoogieIcfgContainer [2018-07-24 15:15:46,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:15:46,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:15:46,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:15:46,258 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:15:46,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:15:19" (1/3) ... [2018-07-24 15:15:46,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3a07c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:15:46, skipping insertion in model container [2018-07-24 15:15:46,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:15:23" (2/3) ... [2018-07-24 15:15:46,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3a07c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:15:46, skipping insertion in model container [2018-07-24 15:15:46,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:15:46" (3/3) ... [2018-07-24 15:15:46,262 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label54_true-unreach-call.c [2018-07-24 15:15:46,271 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:15:46,282 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:15:46,349 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:15:46,350 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:15:46,350 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:15:46,350 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:15:46,350 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:15:46,350 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:15:46,351 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:15:46,351 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:15:46,351 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:15:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 15:15:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-24 15:15:46,412 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:15:46,413 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:15:46,413 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:15:46,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1174165856, now seen corresponding path program 1 times [2018-07-24 15:15:46,420 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:15:46,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:46,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:15:46,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:15:46,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:15:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:15:46,934 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:15:47,041 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 15:15:47,043 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:15:47,044 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:15:47,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:15:47,050 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:15:47,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:15:47,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:15:47,068 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-24 15:16:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:16:04,751 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions. [2018-07-24 15:16:04,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:16:04,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-07-24 15:16:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:16:04,818 INFO L225 Difference]: With dead ends: 5049 [2018-07-24 15:16:04,818 INFO L226 Difference]: Without dead ends: 3269 [2018-07-24 15:16:04,832 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:16:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2018-07-24 15:16:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218. [2018-07-24 15:16:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2018-07-24 15:16:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions. [2018-07-24 15:16:05,048 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 71 [2018-07-24 15:16:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:16:05,049 INFO L471 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions. [2018-07-24 15:16:05,049 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:16:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions. [2018-07-24 15:16:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-24 15:16:05,059 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:16:05,059 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:16:05,060 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:16:05,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1061310538, now seen corresponding path program 1 times [2018-07-24 15:16:05,060 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:16:05,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:05,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:05,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:05,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:16:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:16:05,634 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:16:05,634 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:16:05,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:16:05,637 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:16:05,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:16:05,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:16:05,639 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states. [2018-07-24 15:16:43,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:16:43,602 INFO L93 Difference]: Finished difference Result 9679 states and 18107 transitions. [2018-07-24 15:16:43,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:16:43,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-07-24 15:16:43,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:16:43,645 INFO L225 Difference]: With dead ends: 9679 [2018-07-24 15:16:43,646 INFO L226 Difference]: Without dead ends: 6467 [2018-07-24 15:16:43,657 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:16:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6467 states. [2018-07-24 15:16:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6467 to 6363. [2018-07-24 15:16:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6363 states. [2018-07-24 15:16:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6363 states to 6363 states and 10122 transitions. [2018-07-24 15:16:43,857 INFO L78 Accepts]: Start accepts. Automaton has 6363 states and 10122 transitions. Word has length 143 [2018-07-24 15:16:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:16:43,858 INFO L471 AbstractCegarLoop]: Abstraction has 6363 states and 10122 transitions. [2018-07-24 15:16:43,858 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:16:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 6363 states and 10122 transitions. [2018-07-24 15:16:43,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-24 15:16:43,866 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:16:43,867 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:16:43,867 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:16:43,867 INFO L82 PathProgramCache]: Analyzing trace with hash 478969252, now seen corresponding path program 1 times [2018-07-24 15:16:43,867 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:16:43,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:43,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:16:43,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:16:43,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:16:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:16:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:16:44,153 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:16:44,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:16:44,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:16:44,154 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:16:44,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:16:44,154 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:16:44,154 INFO L87 Difference]: Start difference. First operand 6363 states and 10122 transitions. Second operand 6 states. [2018-07-24 15:17:01,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:17:01,373 INFO L93 Difference]: Finished difference Result 18762 states and 30589 transitions. [2018-07-24 15:17:01,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:17:01,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-07-24 15:17:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:17:01,435 INFO L225 Difference]: With dead ends: 18762 [2018-07-24 15:17:01,435 INFO L226 Difference]: Without dead ends: 12405 [2018-07-24 15:17:01,457 INFO L573 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 [2018-07-24 15:17:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12405 states. [2018-07-24 15:17:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12405 to 12198. [2018-07-24 15:17:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12198 states. [2018-07-24 15:17:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12198 states to 12198 states and 19173 transitions. [2018-07-24 15:17:01,760 INFO L78 Accepts]: Start accepts. Automaton has 12198 states and 19173 transitions. Word has length 150 [2018-07-24 15:17:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:17:01,761 INFO L471 AbstractCegarLoop]: Abstraction has 12198 states and 19173 transitions. [2018-07-24 15:17:01,761 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:17:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 12198 states and 19173 transitions. [2018-07-24 15:17:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-24 15:17:01,768 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:17:01,768 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:01,768 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:17:01,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2079698610, now seen corresponding path program 1 times [2018-07-24 15:17:01,769 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:17:01,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:01,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:01,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:01,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:17:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:17:02,027 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:17:02,027 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:17:02,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:17:02,028 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:17:02,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:17:02,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:17:02,029 INFO L87 Difference]: Start difference. First operand 12198 states and 19173 transitions. Second operand 6 states. [2018-07-24 15:17:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:17:27,360 INFO L93 Difference]: Finished difference Result 36802 states and 59015 transitions. [2018-07-24 15:17:27,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:17:27,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-07-24 15:17:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:17:27,485 INFO L225 Difference]: With dead ends: 36802 [2018-07-24 15:17:27,485 INFO L226 Difference]: Without dead ends: 24610 [2018-07-24 15:17:27,523 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:17:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24610 states. [2018-07-24 15:17:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24610 to 24108. [2018-07-24 15:17:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24108 states. [2018-07-24 15:17:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24108 states to 24108 states and 36201 transitions. [2018-07-24 15:17:28,069 INFO L78 Accepts]: Start accepts. Automaton has 24108 states and 36201 transitions. Word has length 158 [2018-07-24 15:17:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:17:28,069 INFO L471 AbstractCegarLoop]: Abstraction has 24108 states and 36201 transitions. [2018-07-24 15:17:28,069 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:17:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 24108 states and 36201 transitions. [2018-07-24 15:17:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-24 15:17:28,073 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:17:28,074 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:28,074 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:17:28,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2015304975, now seen corresponding path program 1 times [2018-07-24 15:17:28,074 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:17:28,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:28,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:17:28,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:17:28,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:17:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:17:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:17:28,711 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:17:28,712 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:17:28,712 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:17:28,713 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:17:28,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:17:28,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:17:28,714 INFO L87 Difference]: Start difference. First operand 24108 states and 36201 transitions. Second operand 6 states. [2018-07-24 15:18:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:18:19,843 INFO L93 Difference]: Finished difference Result 88842 states and 148993 transitions. [2018-07-24 15:18:19,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 15:18:19,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2018-07-24 15:18:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:18:20,100 INFO L225 Difference]: With dead ends: 88842 [2018-07-24 15:18:20,100 INFO L226 Difference]: Without dead ends: 64740 [2018-07-24 15:18:20,191 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:18:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64740 states. [2018-07-24 15:18:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64740 to 64291. [2018-07-24 15:18:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64291 states. [2018-07-24 15:18:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64291 states to 64291 states and 94135 transitions. [2018-07-24 15:18:21,657 INFO L78 Accepts]: Start accepts. Automaton has 64291 states and 94135 transitions. Word has length 234 [2018-07-24 15:18:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:18:21,658 INFO L471 AbstractCegarLoop]: Abstraction has 64291 states and 94135 transitions. [2018-07-24 15:18:21,658 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:18:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 64291 states and 94135 transitions. [2018-07-24 15:18:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2018-07-24 15:18:21,676 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:18:21,677 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:21,677 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:18:21,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1849220924, now seen corresponding path program 1 times [2018-07-24 15:18:21,678 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:18:21,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:21,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:21,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:21,679 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:18:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:22,305 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:18:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 15:18:22,831 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:18:22,831 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 15:18:22,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:22,847 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:18:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:23,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:18:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:18:23,529 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:18:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:18:24,752 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:18:24,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-07-24 15:18:24,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:18:24,755 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:18:24,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:18:24,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 15:18:24,756 INFO L87 Difference]: Start difference. First operand 64291 states and 94135 transitions. Second operand 3 states. [2018-07-24 15:18:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:18:44,399 INFO L93 Difference]: Finished difference Result 158883 states and 239917 transitions. [2018-07-24 15:18:44,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:18:44,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 567 [2018-07-24 15:18:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:18:44,776 INFO L225 Difference]: With dead ends: 158883 [2018-07-24 15:18:44,777 INFO L226 Difference]: Without dead ends: 94598 [2018-07-24 15:18:45,057 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1134 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 15:18:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94598 states. [2018-07-24 15:18:47,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94598 to 94554. [2018-07-24 15:18:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94554 states. [2018-07-24 15:18:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94554 states to 94554 states and 125716 transitions. [2018-07-24 15:18:47,492 INFO L78 Accepts]: Start accepts. Automaton has 94554 states and 125716 transitions. Word has length 567 [2018-07-24 15:18:47,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:18:47,493 INFO L471 AbstractCegarLoop]: Abstraction has 94554 states and 125716 transitions. [2018-07-24 15:18:47,493 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:18:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 94554 states and 125716 transitions. [2018-07-24 15:18:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-07-24 15:18:47,519 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:18:47,520 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:47,520 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:18:47,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1883991190, now seen corresponding path program 1 times [2018-07-24 15:18:47,521 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:18:47,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:47,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:47,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:18:47,522 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:18:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:18:48,657 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:18:48,657 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:18:48,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:48,668 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:18:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:48,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:18:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:18:49,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:18:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:18:50,407 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:18:50,407 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:18:50,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:18:50,424 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:18:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:18:51,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:18:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:18:51,403 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:18:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:18:52,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:18:52,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 15:18:52,274 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:18:52,277 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:18:52,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:18:52,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:18:52,278 INFO L87 Difference]: Start difference. First operand 94554 states and 125716 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 15:19:12,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 15:19:12,284 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:19:12,290 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:19:12,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:19:12 BoogieIcfgContainer [2018-07-24 15:19:12,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:19:12,292 INFO L168 Benchmark]: Toolchain (without parser) took 232508.13 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 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 924.6 MB. Max. memory is 7.1 GB. [2018-07-24 15:19:12,293 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:19:12,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3797.01 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 217.1 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -139.3 MB). Peak memory consumption was 486.0 MB. Max. memory is 7.1 GB. [2018-07-24 15:19:12,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 366.65 ms. Allocated memory is still 1.8 GB. Free memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2018-07-24 15:19:12,295 INFO L168 Benchmark]: Boogie Preprocessor took 1636.31 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 834.7 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -867.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 7.1 GB. [2018-07-24 15:19:12,296 INFO L168 Benchmark]: RCFGBuilder took 20666.10 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 308.8 MB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 229.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 15:19:12,297 INFO L168 Benchmark]: TraceAbstraction took 206036.30 ms. Allocated memory was 2.9 GB in the beginning and 3.7 GB in the end (delta: 781.7 MB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -512.0 MB). Peak memory consumption was 269.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:19:12,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3797.01 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 217.1 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -139.3 MB). Peak memory consumption was 486.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 366.65 ms. Allocated memory is still 1.8 GB. Free memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1636.31 ms. Allocated memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: 834.7 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -867.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20666.10 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 308.8 MB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 229.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 206036.30 ms. Allocated memory was 2.9 GB in the beginning and 3.7 GB in the end (delta: 781.7 MB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -512.0 MB). Peak memory consumption was 269.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 208]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 208). Cancelled while BasicCegarLoop was constructing difference of abstraction (94554states) and interpolant automaton (currently 20 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (81097 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 205.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 190.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4494 SDtfs, 44341 SDslu, 5071 SDs, 0 SdLazy, 67166 SolverSat, 14338 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 166.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4188 GetRequests, 4122 SyntacticMatches, 13 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94554occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 1357 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 4122 NumberOfCodeBlocks, 4122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 6164 ConstructedInterpolants, 0 QuantifiedInterpolants, 6485622 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2751 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 1413/1483 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_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-19-12-317.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-19-12-317.csv Completed graceful shutdown