java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:49:59,927 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:49:59,929 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:49:59,946 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:49:59,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:49:59,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:49:59,949 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:49:59,953 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:49:59,954 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:49:59,955 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:49:59,956 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:49:59,957 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:49:59,958 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:49:59,959 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:49:59,960 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:49:59,961 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:49:59,962 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:49:59,964 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:49:59,966 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:49:59,977 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:49:59,979 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:49:59,980 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:49:59,982 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:49:59,982 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:49:59,983 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:49:59,986 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:49:59,987 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:49:59,988 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:49:59,989 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:49:59,994 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:49:59,994 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:49:59,995 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:49:59,996 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:49:59,996 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:49:59,997 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:49:59,998 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:49:59,999 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:50:00,027 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:50:00,027 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:50:00,028 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:50:00,028 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:50:00,029 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:50:00,029 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:50:00,029 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:50:00,030 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:50:00,030 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:50:00,030 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:50:00,030 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:50:00,031 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:50:00,031 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:50:00,031 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:50:00,032 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:50:00,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:50:00,033 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:50:00,033 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:50:00,033 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:50:00,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:50:00,034 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:50:00,034 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:50:00,034 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:50:00,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:50:00,036 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:50:00,036 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:50:00,036 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:50:00,036 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:50:00,037 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:50:00,037 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:50:00,037 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:50:00,037 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:50:00,037 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:50:00,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:50:00,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:50:00,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:50:00,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:50:00,145 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:50:00,145 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-09-10 11:50:00,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821bc4163/678491d6335a43609b39c7f11bf0b293/FLAGcaeea402e [2018-09-10 11:50:00,969 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:50:00,970 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-09-10 11:50:01,007 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821bc4163/678491d6335a43609b39c7f11bf0b293/FLAGcaeea402e [2018-09-10 11:50:01,025 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821bc4163/678491d6335a43609b39c7f11bf0b293 [2018-09-10 11:50:01,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:50:01,044 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:50:01,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:50:01,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:50:01,057 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:50:01,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:50:01" (1/1) ... [2018-09-10 11:50:01,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155bbc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:01, skipping insertion in model container [2018-09-10 11:50:01,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:50:01" (1/1) ... [2018-09-10 11:50:01,476 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:50:02,579 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:50:02,598 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:50:03,560 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:50:03,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03 WrapperNode [2018-09-10 11:50:03,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:50:03,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:50:03,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:50:03,852 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:50:03,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:03,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:04,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:50:04,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:50:04,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:50:04,157 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:50:04,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:04,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:04,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:04,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:04,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:04,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:04,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... [2018-09-10 11:50:05,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:50:05,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:50:05,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:50:05,043 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:50:05,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:50:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:50:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:50:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:50:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:50:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:50:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:50:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:50:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:50:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:50:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:50:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:50:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:50:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:50:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:50:14,136 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:50:14,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:50:14 BoogieIcfgContainer [2018-09-10 11:50:14,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:50:14,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:50:14,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:50:14,142 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:50:14,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:50:01" (1/3) ... [2018-09-10 11:50:14,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbe2357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:50:14, skipping insertion in model container [2018-09-10 11:50:14,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:50:03" (2/3) ... [2018-09-10 11:50:14,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbe2357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:50:14, skipping insertion in model container [2018-09-10 11:50:14,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:50:14" (3/3) ... [2018-09-10 11:50:14,145 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-09-10 11:50:14,155 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:50:14,165 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:50:14,223 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:50:14,224 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:50:14,224 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:50:14,224 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:50:14,224 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:50:14,225 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:50:14,225 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:50:14,225 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:50:14,225 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:50:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:50:14,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-10 11:50:14,282 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:14,283 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:50:14,285 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:50:14,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1399102452, now seen corresponding path program 1 times [2018-09-10 11:50:14,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:14,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:14,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:14,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:14,349 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:50:14,793 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:50:14,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:50:14,794 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:50:14,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:50:14,812 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:50:14,813 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:50:14,815 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:50:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:50:22,643 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:50:22,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:50:22,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-09-10 11:50:22,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:50:22,697 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:50:22,697 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:50:22,712 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:50:22,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:50:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:50:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:50:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-10 11:50:22,924 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-09-10 11:50:22,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:50:22,925 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-10 11:50:22,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:50:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-10 11:50:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-10 11:50:22,938 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:22,938 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:50:22,939 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:50:22,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1572758482, now seen corresponding path program 1 times [2018-09-10 11:50:22,939 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:22,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:22,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:22,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:22,943 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:23,324 WARN L175 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:50:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:50:23,571 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:50:23,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:50:23,571 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:50:23,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:50:23,574 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:50:23,574 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:50:23,574 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-09-10 11:50:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:50:39,634 INFO L93 Difference]: Finished difference Result 4793 states and 8579 transitions. [2018-09-10 11:50:39,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:50:39,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-09-10 11:50:39,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:50:39,658 INFO L225 Difference]: With dead ends: 4793 [2018-09-10 11:50:39,658 INFO L226 Difference]: Without dead ends: 3195 [2018-09-10 11:50:39,665 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:50:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-09-10 11:50:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3176. [2018-09-10 11:50:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3176 states. [2018-09-10 11:50:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 4866 transitions. [2018-09-10 11:50:39,757 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 4866 transitions. Word has length 114 [2018-09-10 11:50:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:50:39,757 INFO L480 AbstractCegarLoop]: Abstraction has 3176 states and 4866 transitions. [2018-09-10 11:50:39,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:50:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 4866 transitions. [2018-09-10 11:50:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-10 11:50:39,761 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:39,761 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:50:39,762 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:50:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1601416815, now seen corresponding path program 1 times [2018-09-10 11:50:39,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:39,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:39,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:39,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:39,764 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:50:39,998 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:50:39,999 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:50:39,999 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:50:39,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:50:40,000 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:50:40,000 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:50:40,000 INFO L87 Difference]: Start difference. First operand 3176 states and 4866 transitions. Second operand 6 states. [2018-09-10 11:50:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:50:57,749 INFO L93 Difference]: Finished difference Result 11194 states and 17478 transitions. [2018-09-10 11:50:57,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:50:57,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-09-10 11:50:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:50:57,810 INFO L225 Difference]: With dead ends: 11194 [2018-09-10 11:50:57,811 INFO L226 Difference]: Without dead ends: 8024 [2018-09-10 11:50:57,828 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:50:57,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2018-09-10 11:50:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7942. [2018-09-10 11:50:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7942 states. [2018-09-10 11:50:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7942 states to 7942 states and 11803 transitions. [2018-09-10 11:50:58,057 INFO L78 Accepts]: Start accepts. Automaton has 7942 states and 11803 transitions. Word has length 119 [2018-09-10 11:50:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:50:58,058 INFO L480 AbstractCegarLoop]: Abstraction has 7942 states and 11803 transitions. [2018-09-10 11:50:58,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:50:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 7942 states and 11803 transitions. [2018-09-10 11:50:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-10 11:50:58,061 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:58,062 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:50:58,062 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:50:58,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1773790607, now seen corresponding path program 1 times [2018-09-10 11:50:58,062 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:58,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:58,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:58,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:58,064 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:50:58,224 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:50:58,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:50:58,225 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:50:58,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:50:58,225 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:50:58,225 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:50:58,226 INFO L87 Difference]: Start difference. First operand 7942 states and 11803 transitions. Second operand 5 states. [2018-09-10 11:51:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:51:06,624 INFO L93 Difference]: Finished difference Result 24439 states and 37241 transitions. [2018-09-10 11:51:06,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:51:06,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-09-10 11:51:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:51:06,703 INFO L225 Difference]: With dead ends: 24439 [2018-09-10 11:51:06,703 INFO L226 Difference]: Without dead ends: 16503 [2018-09-10 11:51:06,730 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:51:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16503 states. [2018-09-10 11:51:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16503 to 16266. [2018-09-10 11:51:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16266 states. [2018-09-10 11:51:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16266 states to 16266 states and 22945 transitions. [2018-09-10 11:51:07,138 INFO L78 Accepts]: Start accepts. Automaton has 16266 states and 22945 transitions. Word has length 135 [2018-09-10 11:51:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:51:07,139 INFO L480 AbstractCegarLoop]: Abstraction has 16266 states and 22945 transitions. [2018-09-10 11:51:07,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:51:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16266 states and 22945 transitions. [2018-09-10 11:51:07,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-10 11:51:07,142 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:51:07,142 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:51:07,142 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:51:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash 708226614, now seen corresponding path program 1 times [2018-09-10 11:51:07,143 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:51:07,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:07,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:51:07,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:07,144 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:51:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:51:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:07,471 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:51:07,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:51:07,471 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:51:07,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:51:07,472 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:51:07,472 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:51:07,472 INFO L87 Difference]: Start difference. First operand 16266 states and 22945 transitions. Second operand 5 states. [2018-09-10 11:51:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:51:33,732 INFO L93 Difference]: Finished difference Result 59090 states and 87308 transitions. [2018-09-10 11:51:33,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:51:33,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-09-10 11:51:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:51:33,904 INFO L225 Difference]: With dead ends: 59090 [2018-09-10 11:51:33,904 INFO L226 Difference]: Without dead ends: 42830 [2018-09-10 11:51:33,997 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:51:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42830 states. [2018-09-10 11:51:35,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42830 to 42317. [2018-09-10 11:51:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42317 states. [2018-09-10 11:51:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42317 states to 42317 states and 56772 transitions. [2018-09-10 11:51:35,247 INFO L78 Accepts]: Start accepts. Automaton has 42317 states and 56772 transitions. Word has length 144 [2018-09-10 11:51:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:51:35,247 INFO L480 AbstractCegarLoop]: Abstraction has 42317 states and 56772 transitions. [2018-09-10 11:51:35,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:51:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 42317 states and 56772 transitions. [2018-09-10 11:51:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-10 11:51:35,254 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:51:35,255 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:51:35,255 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:51:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash 233799721, now seen corresponding path program 1 times [2018-09-10 11:51:35,256 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:51:35,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:35,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:51:35,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:35,257 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:51:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:51:35,575 WARN L175 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:51:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:36,002 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:51:36,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:51:36,003 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:51:36,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:51:36,004 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:51:36,004 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:51:36,004 INFO L87 Difference]: Start difference. First operand 42317 states and 56772 transitions. Second operand 6 states. [2018-09-10 11:51:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:51:49,398 INFO L93 Difference]: Finished difference Result 114252 states and 164160 transitions. [2018-09-10 11:51:49,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:51:49,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-09-10 11:51:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:51:49,675 INFO L225 Difference]: With dead ends: 114252 [2018-09-10 11:51:49,675 INFO L226 Difference]: Without dead ends: 71941 [2018-09-10 11:51:49,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:51:49,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71941 states. [2018-09-10 11:51:51,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71941 to 71526. [2018-09-10 11:51:51,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71526 states. [2018-09-10 11:51:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71526 states to 71526 states and 98954 transitions. [2018-09-10 11:51:51,264 INFO L78 Accepts]: Start accepts. Automaton has 71526 states and 98954 transitions. Word has length 203 [2018-09-10 11:51:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:51:51,265 INFO L480 AbstractCegarLoop]: Abstraction has 71526 states and 98954 transitions. [2018-09-10 11:51:51,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:51:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 71526 states and 98954 transitions. [2018-09-10 11:51:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-09-10 11:51:51,276 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:51:51,276 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:51:51,277 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:51:51,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1869125427, now seen corresponding path program 1 times [2018-09-10 11:51:51,277 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:51:51,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:51,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:51:51,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:51:51,280 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:51:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:51:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:51,616 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:51:51,616 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:51:51,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:51:51,631 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:51:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:51:51,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:51:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:52,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:51:52,915 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:51:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:53,265 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:51:53,265 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:51:53,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:51:53,294 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:51:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:51:53,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:51:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:53,693 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:51:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:51:54,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:51:54,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:51:54,055 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:51:54,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:51:54,056 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:51:54,056 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:51:54,057 INFO L87 Difference]: Start difference. First operand 71526 states and 98954 transitions. Second operand 9 states. [2018-09-10 11:52:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:52:18,141 INFO L93 Difference]: Finished difference Result 248706 states and 466745 transitions. [2018-09-10 11:52:18,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 11:52:18,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2018-09-10 11:52:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:52:19,077 INFO L225 Difference]: With dead ends: 248706 [2018-09-10 11:52:19,077 INFO L226 Difference]: Without dead ends: 144698 [2018-09-10 11:52:19,576 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 964 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:52:19,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144698 states. [2018-09-10 11:52:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144698 to 142746. [2018-09-10 11:52:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142746 states. [2018-09-10 11:52:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142746 states to 142746 states and 207178 transitions. [2018-09-10 11:52:25,891 INFO L78 Accepts]: Start accepts. Automaton has 142746 states and 207178 transitions. Word has length 241 [2018-09-10 11:52:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:52:25,891 INFO L480 AbstractCegarLoop]: Abstraction has 142746 states and 207178 transitions. [2018-09-10 11:52:25,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:52:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 142746 states and 207178 transitions. [2018-09-10 11:52:25,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-10 11:52:25,906 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:52:25,907 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:52:25,907 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:52:25,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1501309236, now seen corresponding path program 1 times [2018-09-10 11:52:25,907 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:52:25,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:25,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:25,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:25,909 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:52:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 11:52:26,254 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:52:26,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:52:26,254 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:52:26,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:52:26,255 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:52:26,255 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:52:26,256 INFO L87 Difference]: Start difference. First operand 142746 states and 207178 transitions. Second operand 4 states. [2018-09-10 11:52:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:52:39,504 INFO L93 Difference]: Finished difference Result 283926 states and 417690 transitions. [2018-09-10 11:52:39,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:52:39,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2018-09-10 11:52:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:52:40,129 INFO L225 Difference]: With dead ends: 283926 [2018-09-10 11:52:40,129 INFO L226 Difference]: Without dead ends: 141206 [2018-09-10 11:52:40,442 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:52:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141206 states. [2018-09-10 11:52:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141206 to 141206. [2018-09-10 11:52:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141206 states. [2018-09-10 11:52:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141206 states to 141206 states and 199131 transitions. [2018-09-10 11:52:44,659 INFO L78 Accepts]: Start accepts. Automaton has 141206 states and 199131 transitions. Word has length 306 [2018-09-10 11:52:44,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:52:44,660 INFO L480 AbstractCegarLoop]: Abstraction has 141206 states and 199131 transitions. [2018-09-10 11:52:44,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:52:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 141206 states and 199131 transitions. [2018-09-10 11:52:44,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-09-10 11:52:44,707 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:52:44,708 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:52:44,708 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:52:44,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2090640306, now seen corresponding path program 1 times [2018-09-10 11:52:44,709 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:52:44,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:44,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:44,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:52:44,710 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:52:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:45,295 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 11:52:45,623 WARN L175 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 11:52:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 265 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:52:46,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:52:46,133 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:52:46,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:46,141 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:52:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:46,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:52:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 11:52:47,898 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:52:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 11:52:48,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:52:48,148 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:52:48,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:52:48,164 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:52:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:52:48,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:52:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 11:52:48,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:52:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 11:52:48,794 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:52:48,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 20 [2018-09-10 11:52:48,794 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:52:48,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 11:52:48,796 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 11:52:48,796 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-09-10 11:52:48,796 INFO L87 Difference]: Start difference. First operand 141206 states and 199131 transitions. Second operand 16 states. [2018-09-10 11:53:10,898 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-09-10 11:53:17,184 WARN L175 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-09-10 11:53:24,176 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2018-09-10 11:53:39,777 WARN L175 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-09-10 11:53:44,128 WARN L175 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 Received shutdown request... [2018-09-10 11:53:51,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-10 11:53:51,371 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:53:51,375 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:53:51,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:53:51 BoogieIcfgContainer [2018-09-10 11:53:51,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:53:51,377 INFO L168 Benchmark]: Toolchain (without parser) took 230337.18 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-10 11:53:51,378 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:53:51,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2805.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:53:51,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 304.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:53:51,380 INFO L168 Benchmark]: Boogie Preprocessor took 885.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 909.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-10 11:53:51,381 INFO L168 Benchmark]: RCFGBuilder took 9094.99 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 170.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -153.1 MB). Peak memory consumption was 729.9 MB. Max. memory is 7.1 GB. [2018-09-10 11:53:51,382 INFO L168 Benchmark]: TraceAbstraction took 217237.64 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -478.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-10 11:53:51,387 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2805.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 304.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 885.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 909.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9094.99 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 170.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -153.1 MB). Peak memory consumption was 729.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217237.64 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -478.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 111). Cancelled while BasicCegarLoop was constructing difference of abstraction (141206states) and FLOYD_HOARE automaton (currently 102 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (153567 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 217.1s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 192.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2488 SDtfs, 49628 SDslu, 2802 SDs, 0 SdLazy, 92400 SolverSat, 18638 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 149.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2678 GetRequests, 2499 SyntacticMatches, 11 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4683 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142746occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 3218 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 2864 NumberOfCodeBlocks, 2864 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4049 ConstructedInterpolants, 0 QuantifiedInterpolants, 4226564 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2140 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 2696/2797 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/Problem12_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-53-51-401.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-53-51-401.csv Completed graceful shutdown