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/Problem13_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:21:11,868 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:21:11,870 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:21:11,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:21:11,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:21:11,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:21:11,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:21:11,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:21:11,889 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:21:11,890 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:21:11,891 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:21:11,891 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:21:11,892 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:21:11,893 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:21:11,894 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:21:11,895 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:21:11,896 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:21:11,898 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:21:11,900 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:21:11,901 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:21:11,902 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:21:11,904 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:21:11,906 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 14:21:11,913 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:21:11,913 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:21:11,914 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:21:11,915 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:21:11,915 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 14:21:11,936 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:21:11,937 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:21:11,941 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:21:11,942 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:21:11,942 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:21:11,942 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:21:11,942 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:21:11,943 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:21:11,943 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:21:11,943 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:21:11,943 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:21:11,944 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:21:11,944 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:21:11,944 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:21:11,944 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:21:11,945 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:21:11,945 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:21:11,945 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:21:11,945 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:21:11,945 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:21:11,946 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:21:11,946 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:21:11,946 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:21:11,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:21:11,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:21:11,947 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:21:11,947 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:21:11,947 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:21:11,947 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:21:11,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:21:11,948 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:21:11,948 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:21:11,948 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:21:12,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:21:12,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:21:12,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:21:12,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:21:12,030 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:21:12,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label39_true-unreach-call.c [2018-07-24 14:21:12,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afd42719b/34512518ed434599bb458287764deeb2/FLAG91b20c492 [2018-07-24 14:21:12,930 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:21:12,931 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label39_true-unreach-call.c [2018-07-24 14:21:12,975 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afd42719b/34512518ed434599bb458287764deeb2/FLAG91b20c492 [2018-07-24 14:21:12,997 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afd42719b/34512518ed434599bb458287764deeb2 [2018-07-24 14:21:13,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:21:13,012 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:21:13,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:21:13,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:21:13,020 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:21:13,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:21:12" (1/1) ... [2018-07-24 14:21:13,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d9fee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:13, skipping insertion in model container [2018-07-24 14:21:13,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:21:12" (1/1) ... [2018-07-24 14:21:13,384 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:21:14,609 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:21:14,627 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:21:15,455 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:21:15,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15 WrapperNode [2018-07-24 14:21:15,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:21:15,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:21:15,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:21:15,892 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:21:15,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:16,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:16,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:21:16,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:21:16,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:21:16,218 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:21:17,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:17,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:17,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:17,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:17,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:17,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:17,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (1/1) ... [2018-07-24 14:21:17,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:21:17,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:21:17,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:21:17,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:21:17,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (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 14:21:17,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:21:17,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:21:17,495 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 14:21:17,495 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 14:21:17,495 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 14:21:17,496 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 14:21:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:21:17,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:21:17,496 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 14:21:17,496 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 14:21:17,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:21:17,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:21:17,497 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 14:21:17,498 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 14:21:30,876 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:21:30,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:21:30 BoogieIcfgContainer [2018-07-24 14:21:30,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:21:30,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:21:30,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:21:30,882 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:21:30,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:21:12" (1/3) ... [2018-07-24 14:21:30,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b30735a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:21:30, skipping insertion in model container [2018-07-24 14:21:30,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:21:15" (2/3) ... [2018-07-24 14:21:30,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b30735a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:21:30, skipping insertion in model container [2018-07-24 14:21:30,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:21:30" (3/3) ... [2018-07-24 14:21:30,886 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label39_true-unreach-call.c [2018-07-24 14:21:30,896 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:21:30,906 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:21:30,977 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:21:30,977 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:21:30,978 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:21:30,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:21:30,978 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:21:30,978 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:21:30,978 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:21:30,978 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:21:30,978 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:21:31,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:21:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-24 14:21:31,045 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:31,046 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] [2018-07-24 14:21:31,047 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 14:21:31,054 INFO L82 PathProgramCache]: Analyzing trace with hash -310615820, now seen corresponding path program 1 times [2018-07-24 14:21:31,057 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:31,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:31,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:31,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:31,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:31,552 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-24 14:21:31,606 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 14:21:31,611 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:21:31,612 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:21:31,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:31,626 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:21:31,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:21:31,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:21:31,645 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-07-24 14:21:46,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:46,955 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-07-24 14:21:46,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:21:46,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-07-24 14:21:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:47,005 INFO L225 Difference]: With dead ends: 4065 [2018-07-24 14:21:47,005 INFO L226 Difference]: Without dead ends: 2939 [2018-07-24 14:21:47,018 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:21:47,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-07-24 14:21:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-07-24 14:21:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-07-24 14:21:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-07-24 14:21:47,218 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 58 [2018-07-24 14:21:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:47,219 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-07-24 14:21:47,219 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:21:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-07-24 14:21:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-24 14:21:47,236 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:47,236 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, 1, 1, 1, 1, 1, 1, 1, 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 14:21:47,237 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 14:21:47,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1928644659, now seen corresponding path program 1 times [2018-07-24 14:21:47,237 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:47,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:47,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:47,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:47,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:47,675 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:21:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:21:48,069 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:21:48,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:21:48,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:48,073 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:21:48,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:21:48,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:21:48,074 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-07-24 14:22:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:02,091 INFO L93 Difference]: Finished difference Result 5660 states and 10515 transitions. [2018-07-24 14:22:02,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:22:02,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-07-24 14:22:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:02,116 INFO L225 Difference]: With dead ends: 5660 [2018-07-24 14:22:02,116 INFO L226 Difference]: Without dead ends: 3694 [2018-07-24 14:22:02,124 INFO L573 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 [2018-07-24 14:22:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2018-07-24 14:22:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3663. [2018-07-24 14:22:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2018-07-24 14:22:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 6064 transitions. [2018-07-24 14:22:02,228 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 6064 transitions. Word has length 131 [2018-07-24 14:22:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:02,229 INFO L471 AbstractCegarLoop]: Abstraction has 3663 states and 6064 transitions. [2018-07-24 14:22:02,229 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:22:02,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 6064 transitions. [2018-07-24 14:22:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-24 14:22:02,234 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:02,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:02,235 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 14:22:02,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1558985360, now seen corresponding path program 1 times [2018-07-24 14:22:02,235 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:02,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:02,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:02,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:02,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:02,664 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:22:02,664 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:22:02,665 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:02,665 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:22:02,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:22:02,666 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:22:02,666 INFO L87 Difference]: Start difference. First operand 3663 states and 6064 transitions. Second operand 6 states. [2018-07-24 14:22:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:15,462 INFO L93 Difference]: Finished difference Result 12410 states and 20905 transitions. [2018-07-24 14:22:15,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:22:15,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-07-24 14:22:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:15,522 INFO L225 Difference]: With dead ends: 12410 [2018-07-24 14:22:15,522 INFO L226 Difference]: Without dead ends: 8753 [2018-07-24 14:22:15,547 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:22:15,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2018-07-24 14:22:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 8702. [2018-07-24 14:22:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2018-07-24 14:22:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 13042 transitions. [2018-07-24 14:22:15,900 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 13042 transitions. Word has length 144 [2018-07-24 14:22:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:15,901 INFO L471 AbstractCegarLoop]: Abstraction has 8702 states and 13042 transitions. [2018-07-24 14:22:15,901 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:22:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 13042 transitions. [2018-07-24 14:22:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-24 14:22:15,905 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:15,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:15,909 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 14:22:15,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1820254896, now seen corresponding path program 1 times [2018-07-24 14:22:15,910 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:15,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:15,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:15,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:15,911 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:16,271 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:22:16,272 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:22:16,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:16,274 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:22:16,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:22:16,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:22:16,275 INFO L87 Difference]: Start difference. First operand 8702 states and 13042 transitions. Second operand 5 states. [2018-07-24 14:22:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:32,522 INFO L93 Difference]: Finished difference Result 26434 states and 42234 transitions. [2018-07-24 14:22:32,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:22:32,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-07-24 14:22:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:32,615 INFO L225 Difference]: With dead ends: 26434 [2018-07-24 14:22:32,616 INFO L226 Difference]: Without dead ends: 17738 [2018-07-24 14:22:32,643 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:22:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17738 states. [2018-07-24 14:22:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17738 to 17456. [2018-07-24 14:22:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17456 states. [2018-07-24 14:22:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17456 states to 17456 states and 25481 transitions. [2018-07-24 14:22:33,069 INFO L78 Accepts]: Start accepts. Automaton has 17456 states and 25481 transitions. Word has length 160 [2018-07-24 14:22:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:33,070 INFO L471 AbstractCegarLoop]: Abstraction has 17456 states and 25481 transitions. [2018-07-24 14:22:33,070 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:22:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 17456 states and 25481 transitions. [2018-07-24 14:22:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-24 14:22:33,075 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:33,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:33,076 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 14:22:33,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1916942136, now seen corresponding path program 1 times [2018-07-24 14:22:33,076 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:33,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:33,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:33,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:33,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:33,376 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:22:33,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:22:33,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:33,377 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:22:33,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:22:33,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:22:33,377 INFO L87 Difference]: Start difference. First operand 17456 states and 25481 transitions. Second operand 5 states. [2018-07-24 14:23:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:02,524 INFO L93 Difference]: Finished difference Result 53248 states and 82544 transitions. [2018-07-24 14:23:02,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:23:02,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2018-07-24 14:23:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:02,681 INFO L225 Difference]: With dead ends: 53248 [2018-07-24 14:23:02,682 INFO L226 Difference]: Without dead ends: 35798 [2018-07-24 14:23:02,749 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:23:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35798 states. [2018-07-24 14:23:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35798 to 35514. [2018-07-24 14:23:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35514 states. [2018-07-24 14:23:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35514 states to 35514 states and 52200 transitions. [2018-07-24 14:23:03,526 INFO L78 Accepts]: Start accepts. Automaton has 35514 states and 52200 transitions. Word has length 164 [2018-07-24 14:23:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:03,527 INFO L471 AbstractCegarLoop]: Abstraction has 35514 states and 52200 transitions. [2018-07-24 14:23:03,527 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:23:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 35514 states and 52200 transitions. [2018-07-24 14:23:03,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-24 14:23:03,531 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:03,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:03,532 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 14:23:03,532 INFO L82 PathProgramCache]: Analyzing trace with hash -426483212, now seen corresponding path program 1 times [2018-07-24 14:23:03,532 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:03,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:03,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:03,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:03,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:04,205 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:04,205 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 14:23:04,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:04,223 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:04,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:04,562 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:04,883 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 14:23:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:05,618 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:23:05,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-07-24 14:23:05,618 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:05,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:23:05,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:23:05,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:23:05,620 INFO L87 Difference]: Start difference. First operand 35514 states and 52200 transitions. Second operand 6 states. [2018-07-24 14:23:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:23,970 INFO L93 Difference]: Finished difference Result 109636 states and 172678 transitions. [2018-07-24 14:23:23,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:23:23,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-07-24 14:23:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:24,272 INFO L225 Difference]: With dead ends: 109636 [2018-07-24 14:23:24,272 INFO L226 Difference]: Without dead ends: 74128 [2018-07-24 14:23:24,393 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:23:24,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74128 states. [2018-07-24 14:23:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74128 to 63583. [2018-07-24 14:23:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63583 states. [2018-07-24 14:23:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63583 states to 63583 states and 95307 transitions. [2018-07-24 14:23:25,924 INFO L78 Accepts]: Start accepts. Automaton has 63583 states and 95307 transitions. Word has length 174 [2018-07-24 14:23:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:25,926 INFO L471 AbstractCegarLoop]: Abstraction has 63583 states and 95307 transitions. [2018-07-24 14:23:25,926 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 63583 states and 95307 transitions. [2018-07-24 14:23:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-24 14:23:25,939 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:25,939 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, 2, 2, 2, 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] [2018-07-24 14:23:25,939 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 14:23:25,940 INFO L82 PathProgramCache]: Analyzing trace with hash -31091692, now seen corresponding path program 1 times [2018-07-24 14:23:25,940 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:25,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:25,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:25,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:25,941 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:26,217 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:23:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 102 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:23:26,616 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:26,616 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 14:23:26,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:26,633 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:26,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 14:23:27,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 102 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:23:27,486 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:23:27,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 14:23:27,486 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:27,487 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:23:27,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:23:27,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:23:27,488 INFO L87 Difference]: Start difference. First operand 63583 states and 95307 transitions. Second operand 5 states. [2018-07-24 14:23:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:42,713 INFO L93 Difference]: Finished difference Result 183449 states and 287650 transitions. [2018-07-24 14:23:42,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:23:42,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2018-07-24 14:23:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:43,135 INFO L225 Difference]: With dead ends: 183449 [2018-07-24 14:23:43,136 INFO L226 Difference]: Without dead ends: 119872 [2018-07-24 14:23:43,284 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 479 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:23:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119872 states. [2018-07-24 14:23:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119872 to 119457. [2018-07-24 14:23:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119457 states. [2018-07-24 14:23:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119457 states to 119457 states and 166357 transitions. [2018-07-24 14:23:45,582 INFO L78 Accepts]: Start accepts. Automaton has 119457 states and 166357 transitions. Word has length 242 [2018-07-24 14:23:45,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:45,583 INFO L471 AbstractCegarLoop]: Abstraction has 119457 states and 166357 transitions. [2018-07-24 14:23:45,583 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:23:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 119457 states and 166357 transitions. [2018-07-24 14:23:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-24 14:23:45,599 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:45,599 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:23:45,600 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:45,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1653553356, now seen corresponding path program 1 times [2018-07-24 14:23:45,600 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:45,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:45,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:45,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:45,602 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:47,086 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:47,086 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:23:47,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:47,102 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:47,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:47,397 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:47,782 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:47,782 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:23:47,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:47,813 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:48,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:48,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:48,561 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:23:48,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:23:48,562 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:23:48,563 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:23:48,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:23:48,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:23:48,564 INFO L87 Difference]: Start difference. First operand 119457 states and 166357 transitions. Second operand 9 states. [2018-07-24 14:24:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:17,922 INFO L93 Difference]: Finished difference Result 333632 states and 586421 transitions. [2018-07-24 14:24:17,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-24 14:24:17,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 258 [2018-07-24 14:24:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:20,450 INFO L225 Difference]: With dead ends: 333632 [2018-07-24 14:24:20,450 INFO L226 Difference]: Without dead ends: 214985 [2018-07-24 14:24:20,896 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1033 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-07-24 14:24:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214985 states. [2018-07-24 14:24:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214985 to 208061. [2018-07-24 14:24:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208061 states. [2018-07-24 14:24:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208061 states to 208061 states and 285898 transitions. [2018-07-24 14:24:26,066 INFO L78 Accepts]: Start accepts. Automaton has 208061 states and 285898 transitions. Word has length 258 [2018-07-24 14:24:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:26,067 INFO L471 AbstractCegarLoop]: Abstraction has 208061 states and 285898 transitions. [2018-07-24 14:24:26,067 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:24:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 208061 states and 285898 transitions. [2018-07-24 14:24:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-24 14:24:26,087 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:26,088 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:24:26,088 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:26,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1377559738, now seen corresponding path program 1 times [2018-07-24 14:24:26,088 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:26,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:26,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:26,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:26,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 107 proven. 93 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-07-24 14:24:28,316 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:28,316 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:28,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:28,326 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:28,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-07-24 14:24:28,559 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 107 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:29,406 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:29,407 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:24:29,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:29,422 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:29,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-07-24 14:24:29,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 107 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:30,251 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:24:30,251 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 14 [2018-07-24 14:24:30,251 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:24:30,252 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:24:30,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:24:30,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:24:30,253 INFO L87 Difference]: Start difference. First operand 208061 states and 285898 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 14:25:03,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-24 14:25:03,173 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:25:03,180 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:25:03,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:25:03 BoogieIcfgContainer [2018-07-24 14:25:03,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:25:03,181 INFO L168 Benchmark]: Toolchain (without parser) took 230171.29 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -101.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 14:25:03,182 INFO L168 Benchmark]: CDTParser took 0.24 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 14:25:03,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2878.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 349.8 MB). Peak memory consumption was 349.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:03,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 326.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:03,184 INFO L168 Benchmark]: Boogie Preprocessor took 1210.36 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:03,185 INFO L168 Benchmark]: RCFGBuilder took 13448.89 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 145.2 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 95.5 MB). Peak memory consumption was 745.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:25:03,186 INFO L168 Benchmark]: TraceAbstraction took 212302.10 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 780.1 MB). Free memory was 2.3 GB in the beginning and 1.5 GB in the end (delta: 747.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-24 14:25:03,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2878.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 349.8 MB). Peak memory consumption was 349.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 326.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1210.36 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13448.89 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 145.2 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 95.5 MB). Peak memory consumption was 745.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212302.10 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 780.1 MB). Free memory was 2.3 GB in the beginning and 1.5 GB in the end (delta: 747.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (208061states) and interpolant automaton (currently 19 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (149841 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 187.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3416 SDtfs, 37581 SDslu, 5493 SDs, 0 SdLazy, 74273 SolverSat, 16616 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 152.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3032 GetRequests, 2920 SyntacticMatches, 17 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208061occurred in iteration=8, 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: 10.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 19499 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 3058 NumberOfCodeBlocks, 3058 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4499 ConstructedInterpolants, 208 QuantifiedInterpolants, 4415313 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2730 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 2353/2892 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/Problem13_label39_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-25-03-205.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label39_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-25-03-205.csv Completed graceful shutdown