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/Problem12_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:11:24,123 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:11:24,127 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:11:24,144 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:11:24,144 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:11:24,146 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:11:24,147 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:11:24,149 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:11:24,153 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:11:24,154 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:11:24,156 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:11:24,157 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:11:24,158 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:11:24,158 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:11:24,160 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:11:24,161 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:11:24,162 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:11:24,170 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:11:24,173 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:11:24,176 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:11:24,180 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:11:24,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:11:24,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:11:24,186 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:11:24,187 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:11:24,188 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:11:24,189 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:11:24,190 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:11:24,191 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:11:24,192 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:11:24,192 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:11:24,193 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:11:24,193 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:11:24,193 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:11:24,194 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:11:24,195 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:11:24,195 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 14:11:24,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:11:24,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:11:24,212 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:11:24,213 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:11:24,213 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:11:24,213 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:11:24,213 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:11:24,213 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:11:24,214 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:11:24,214 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:11:24,214 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:11:24,215 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:11:24,215 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:11:24,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:11:24,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:11:24,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:11:24,216 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:11:24,216 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:11:24,216 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:11:24,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:11:24,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:11:24,217 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:11:24,217 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:11:24,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:11:24,217 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:11:24,217 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:11:24,217 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:11:24,218 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:11:24,218 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:11:24,218 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:11:24,218 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:11:24,218 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:11:24,219 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:11:24,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:11:24,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:11:24,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:11:24,292 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:11:24,292 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:11:24,293 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c [2018-07-24 14:11:24,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84cf0e39e/5c295c4d4e294686953541c8b410060a/FLAG50126a8a0 [2018-07-24 14:11:25,152 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:11:25,153 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c [2018-07-24 14:11:25,195 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84cf0e39e/5c295c4d4e294686953541c8b410060a/FLAG50126a8a0 [2018-07-24 14:11:25,218 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84cf0e39e/5c295c4d4e294686953541c8b410060a [2018-07-24 14:11:25,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:11:25,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:11:25,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:11:25,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:11:25,248 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:11:25,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:11:25" (1/1) ... [2018-07-24 14:11:25,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9674d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:25, skipping insertion in model container [2018-07-24 14:11:25,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:11:25" (1/1) ... [2018-07-24 14:11:25,630 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:11:26,646 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:11:26,670 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:11:27,420 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:11:27,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27 WrapperNode [2018-07-24 14:11:27,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:11:27,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:11:27,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:11:27,682 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:11:27,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:27,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:27,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:11:27,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:11:27,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:11:27,942 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:11:28,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:28,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:28,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:28,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:28,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:28,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:28,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (1/1) ... [2018-07-24 14:11:28,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:11:28,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:11:28,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:11:28,894 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:11:28,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (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 14:11:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:11:28,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:11:28,970 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 14:11:28,970 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 14:11:28,970 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 14:11:28,970 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 14:11:28,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:11:28,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:11:28,971 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 14:11:28,971 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 14:11:28,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:11:28,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:11:28,972 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 14:11:28,972 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 14:11:40,461 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:11:40,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:11:40 BoogieIcfgContainer [2018-07-24 14:11:40,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:11:40,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:11:40,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:11:40,467 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:11:40,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:11:25" (1/3) ... [2018-07-24 14:11:40,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f14f1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:11:40, skipping insertion in model container [2018-07-24 14:11:40,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:11:27" (2/3) ... [2018-07-24 14:11:40,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f14f1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:11:40, skipping insertion in model container [2018-07-24 14:11:40,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:11:40" (3/3) ... [2018-07-24 14:11:40,470 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label32_true-unreach-call.c [2018-07-24 14:11:40,480 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:11:40,489 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:11:40,549 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:11:40,550 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:11:40,550 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:11:40,550 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:11:40,550 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:11:40,550 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:11:40,551 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:11:40,551 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:11:40,551 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:11:40,597 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:11:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-24 14:11:40,614 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:40,615 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] [2018-07-24 14:11:40,616 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 14:11:40,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1141627988, now seen corresponding path program 1 times [2018-07-24 14:11:40,624 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:40,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:40,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:40,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:40,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:41,094 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 14:11:41,097 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:41,097 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:11:41,097 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:41,104 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:11:41,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:11:41,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:11:41,122 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:11:50,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:50,028 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:11:50,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:11:50,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-07-24 14:11:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:50,077 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:11:50,077 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:11:50,088 INFO L573 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 [2018-07-24 14:11:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:11:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:11:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:11:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-07-24 14:11:50,282 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 50 [2018-07-24 14:11:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:50,283 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-07-24 14:11:50,283 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:11:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-07-24 14:11:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-24 14:11:50,290 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:50,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:50,291 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 14:11:50,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1853791226, now seen corresponding path program 1 times [2018-07-24 14:11:50,291 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:50,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:50,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:50,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:50,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:50,691 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:50,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:11:50,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:50,694 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:11:50,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:11:50,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:11:50,695 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-07-24 14:12:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:09,377 INFO L93 Difference]: Finished difference Result 6329 states and 11914 transitions. [2018-07-24 14:12:09,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:12:09,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-07-24 14:12:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:09,417 INFO L225 Difference]: With dead ends: 6329 [2018-07-24 14:12:09,417 INFO L226 Difference]: Without dead ends: 4731 [2018-07-24 14:12:09,426 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:12:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-07-24 14:12:09,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4702. [2018-07-24 14:12:09,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-07-24 14:12:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7573 transitions. [2018-07-24 14:12:09,568 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7573 transitions. Word has length 124 [2018-07-24 14:12:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:09,568 INFO L471 AbstractCegarLoop]: Abstraction has 4702 states and 7573 transitions. [2018-07-24 14:12:09,568 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:12:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7573 transitions. [2018-07-24 14:12:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-24 14:12:09,573 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:09,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:09,574 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 14:12:09,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1766892630, now seen corresponding path program 1 times [2018-07-24 14:12:09,574 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:09,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:09,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:09,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:09,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:12:09,834 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:09,834 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 14:12:09,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:09,854 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:09,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:12:10,149 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:12:10,930 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:12:10,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-07-24 14:12:10,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:10,932 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:12:10,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:12:10,932 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:12:10,933 INFO L87 Difference]: Start difference. First operand 4702 states and 7573 transitions. Second operand 4 states. [2018-07-24 14:12:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:19,847 INFO L93 Difference]: Finished difference Result 14024 states and 22978 transitions. [2018-07-24 14:12:19,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:12:19,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-07-24 14:12:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:19,905 INFO L225 Difference]: With dead ends: 14024 [2018-07-24 14:12:19,906 INFO L226 Difference]: Without dead ends: 9328 [2018-07-24 14:12:19,926 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:12:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2018-07-24 14:12:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 9328. [2018-07-24 14:12:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9328 states. [2018-07-24 14:12:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9328 states to 9328 states and 14833 transitions. [2018-07-24 14:12:20,172 INFO L78 Accepts]: Start accepts. Automaton has 9328 states and 14833 transitions. Word has length 126 [2018-07-24 14:12:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:20,173 INFO L471 AbstractCegarLoop]: Abstraction has 9328 states and 14833 transitions. [2018-07-24 14:12:20,173 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:12:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 9328 states and 14833 transitions. [2018-07-24 14:12:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-07-24 14:12:20,178 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:20,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:20,178 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 14:12:20,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1302178418, now seen corresponding path program 1 times [2018-07-24 14:12:20,179 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:20,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:20,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:20,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:20,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:20,716 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:20,716 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:12:20,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:20,717 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:12:20,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:12:20,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:12:20,717 INFO L87 Difference]: Start difference. First operand 9328 states and 14833 transitions. Second operand 6 states. [2018-07-24 14:12:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:47,213 INFO L93 Difference]: Finished difference Result 29974 states and 50376 transitions. [2018-07-24 14:12:47,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:12:47,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-07-24 14:12:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:47,341 INFO L225 Difference]: With dead ends: 29974 [2018-07-24 14:12:47,342 INFO L226 Difference]: Without dead ends: 20652 [2018-07-24 14:12:47,408 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:12:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20652 states. [2018-07-24 14:12:47,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20652 to 20502. [2018-07-24 14:12:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20502 states. [2018-07-24 14:12:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20502 states to 20502 states and 30433 transitions. [2018-07-24 14:12:47,998 INFO L78 Accepts]: Start accepts. Automaton has 20502 states and 30433 transitions. Word has length 160 [2018-07-24 14:12:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:47,999 INFO L471 AbstractCegarLoop]: Abstraction has 20502 states and 30433 transitions. [2018-07-24 14:12:47,999 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:12:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 20502 states and 30433 transitions. [2018-07-24 14:12:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-24 14:12:48,013 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:48,013 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:12:48,013 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 14:12:48,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1792529356, now seen corresponding path program 1 times [2018-07-24 14:12:48,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:48,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:48,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:48,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:48,018 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:12:48,415 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:48,416 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 14:12:48,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:48,620 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:48,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 14:12:49,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:12:49,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:12:49,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:12:49,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:49,356 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:12:49,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:12:49,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:12:49,357 INFO L87 Difference]: Start difference. First operand 20502 states and 30433 transitions. Second operand 5 states. [2018-07-24 14:12:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:58,459 INFO L93 Difference]: Finished difference Result 47755 states and 76327 transitions. [2018-07-24 14:12:58,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:12:58,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2018-07-24 14:12:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:58,578 INFO L225 Difference]: With dead ends: 47755 [2018-07-24 14:12:58,578 INFO L226 Difference]: Without dead ends: 27259 [2018-07-24 14:12:58,630 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 403 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:12:58,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27259 states. [2018-07-24 14:12:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27259 to 27137. [2018-07-24 14:12:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27137 states. [2018-07-24 14:12:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27137 states to 27137 states and 36115 transitions. [2018-07-24 14:12:59,491 INFO L78 Accepts]: Start accepts. Automaton has 27137 states and 36115 transitions. Word has length 204 [2018-07-24 14:12:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:59,491 INFO L471 AbstractCegarLoop]: Abstraction has 27137 states and 36115 transitions. [2018-07-24 14:12:59,491 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:12:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 27137 states and 36115 transitions. [2018-07-24 14:12:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-07-24 14:12:59,507 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:59,507 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:12:59,507 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 14:12:59,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1972424309, now seen corresponding path program 1 times [2018-07-24 14:12:59,508 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:59,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:59,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:59,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:59,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 86 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:12:59,919 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:59,919 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 14:12:59,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:59,936 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:00,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 14:13:00,201 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 86 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:00,371 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:13:00,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:13:00,372 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:00,372 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:00,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:00,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:13:00,373 INFO L87 Difference]: Start difference. First operand 27137 states and 36115 transitions. Second operand 5 states. [2018-07-24 14:13:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:11,814 INFO L93 Difference]: Finished difference Result 81595 states and 114326 transitions. [2018-07-24 14:13:11,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:13:11,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2018-07-24 14:13:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:12,014 INFO L225 Difference]: With dead ends: 81595 [2018-07-24 14:13:12,015 INFO L226 Difference]: Without dead ends: 54464 [2018-07-24 14:13:12,077 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:13:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54464 states. [2018-07-24 14:13:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54464 to 54173. [2018-07-24 14:13:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54173 states. [2018-07-24 14:13:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54173 states to 54173 states and 69080 transitions. [2018-07-24 14:13:13,101 INFO L78 Accepts]: Start accepts. Automaton has 54173 states and 69080 transitions. Word has length 231 [2018-07-24 14:13:13,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:13,102 INFO L471 AbstractCegarLoop]: Abstraction has 54173 states and 69080 transitions. [2018-07-24 14:13:13,102 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:13:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 54173 states and 69080 transitions. [2018-07-24 14:13:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-24 14:13:13,113 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:13,113 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:13:13,114 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 14:13:13,114 INFO L82 PathProgramCache]: Analyzing trace with hash -148821389, now seen corresponding path program 1 times [2018-07-24 14:13:13,114 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:13,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:13,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:13,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:13,115 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:13:13,384 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:13:13,384 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:13:13,385 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:13,385 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:13:13,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:13:13,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:13:13,386 INFO L87 Difference]: Start difference. First operand 54173 states and 69080 transitions. Second operand 4 states. [2018-07-24 14:13:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:25,919 INFO L93 Difference]: Finished difference Result 210792 states and 288174 transitions. [2018-07-24 14:13:25,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:13:25,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2018-07-24 14:13:25,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:26,545 INFO L225 Difference]: With dead ends: 210792 [2018-07-24 14:13:26,546 INFO L226 Difference]: Without dead ends: 156625 [2018-07-24 14:13:26,788 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:13:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156625 states. [2018-07-24 14:13:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156625 to 156610. [2018-07-24 14:13:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156610 states. [2018-07-24 14:13:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156610 states to 156610 states and 204389 transitions. [2018-07-24 14:13:30,425 INFO L78 Accepts]: Start accepts. Automaton has 156610 states and 204389 transitions. Word has length 273 [2018-07-24 14:13:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:30,425 INFO L471 AbstractCegarLoop]: Abstraction has 156610 states and 204389 transitions. [2018-07-24 14:13:30,425 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:13:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 156610 states and 204389 transitions. [2018-07-24 14:13:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-24 14:13:30,488 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:30,489 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 14:13:30,489 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 14:13:30,489 INFO L82 PathProgramCache]: Analyzing trace with hash 631298842, now seen corresponding path program 1 times [2018-07-24 14:13:30,489 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:30,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:30,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:30,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:30,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:13:30,891 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:30,891 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:30,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:30,899 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:31,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:13:31,190 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:13:32,878 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:32,878 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:13:32,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:32,896 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:33,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:13:33,274 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:13:33,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:13:33,458 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:13:33,458 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:13:33,460 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:13:33,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:13:33,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:13:33,461 INFO L87 Difference]: Start difference. First operand 156610 states and 204389 transitions. Second operand 9 states. [2018-07-24 14:13:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:57,782 INFO L93 Difference]: Finished difference Result 410279 states and 604782 transitions. [2018-07-24 14:13:57,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 14:13:57,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 368 [2018-07-24 14:13:57,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:58,609 INFO L225 Difference]: With dead ends: 410279 [2018-07-24 14:13:58,609 INFO L226 Difference]: Without dead ends: 230445 [2018-07-24 14:13:59,051 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1490 GetRequests, 1468 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:13:59,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230445 states. [2018-07-24 14:14:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230445 to 225830. [2018-07-24 14:14:03,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225830 states. [2018-07-24 14:14:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225830 states to 225830 states and 298350 transitions. [2018-07-24 14:14:13,639 INFO L78 Accepts]: Start accepts. Automaton has 225830 states and 298350 transitions. Word has length 368 [2018-07-24 14:14:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:13,640 INFO L471 AbstractCegarLoop]: Abstraction has 225830 states and 298350 transitions. [2018-07-24 14:14:13,640 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:14:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 225830 states and 298350 transitions. [2018-07-24 14:14:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-07-24 14:14:13,740 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:13,740 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:14:13,741 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 14:14:13,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1769110923, now seen corresponding path program 1 times [2018-07-24 14:14:13,741 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:13,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:13,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:13,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:13,742 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 281 proven. 109 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-07-24 14:14:14,613 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:14,613 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:14:14,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:14,626 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:14,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 452 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 14:14:15,019 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 281 proven. 109 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-07-24 14:14:15,318 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:15,319 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:14:15,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:15,336 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:15,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 452 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 14:14:15,986 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 281 proven. 109 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-07-24 14:14:16,279 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:14:16,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:14:16,281 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:14:16,282 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:14:16,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:14:16,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:14:16,283 INFO L87 Difference]: Start difference. First operand 225830 states and 298350 transitions. Second operand 9 states. [2018-07-24 14:14:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:39,009 INFO L93 Difference]: Finished difference Result 562787 states and 806378 transitions. [2018-07-24 14:14:39,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:14:39,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 477 [2018-07-24 14:14:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:40,533 INFO L225 Difference]: With dead ends: 562787 [2018-07-24 14:14:40,534 INFO L226 Difference]: Without dead ends: 337731 [2018-07-24 14:14:41,129 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1936 GetRequests, 1910 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:14:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337731 states. [2018-07-24 14:14:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337731 to 327363. [2018-07-24 14:14:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327363 states. [2018-07-24 14:14:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327363 states to 327363 states and 420417 transitions. [2018-07-24 14:14:48,872 INFO L78 Accepts]: Start accepts. Automaton has 327363 states and 420417 transitions. Word has length 477 [2018-07-24 14:14:48,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:48,873 INFO L471 AbstractCegarLoop]: Abstraction has 327363 states and 420417 transitions. [2018-07-24 14:14:48,873 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:14:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 327363 states and 420417 transitions. [2018-07-24 14:14:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-07-24 14:14:48,975 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:48,976 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 14:14:48,976 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:14:48,976 INFO L82 PathProgramCache]: Analyzing trace with hash -223246917, now seen corresponding path program 1 times [2018-07-24 14:14:48,977 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:48,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:48,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:48,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:48,978 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 388 proven. 109 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-07-24 14:14:49,615 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:49,615 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:14:49,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:49,630 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:49,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-07-24 14:14:50,157 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 388 proven. 109 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-07-24 14:14:51,512 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:51,512 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:14:51,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:51,529 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:51,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-07-24 14:14:52,153 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 388 proven. 109 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-07-24 14:14:52,408 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:14:52,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 12 [2018-07-24 14:14:52,409 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:14:52,410 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:14:52,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:14:52,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:14:52,411 INFO L87 Difference]: Start difference. First operand 327363 states and 420417 transitions. Second operand 6 states. Received shutdown request... [2018-07-24 14:15:08,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:15:08,413 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:15:08,421 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:15:08,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:15:08 BoogieIcfgContainer [2018-07-24 14:15:08,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:15:08,422 INFO L168 Benchmark]: Toolchain (without parser) took 223190.68 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-07-24 14:15:08,424 INFO L168 Benchmark]: CDTParser took 0.23 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 14:15:08,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2443.72 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. [2018-07-24 14:15:08,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 258.95 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:08,426 INFO L168 Benchmark]: Boogie Preprocessor took 952.46 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 923.3 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 128.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:08,427 INFO L168 Benchmark]: RCFGBuilder took 11568.68 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 148.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -114.4 MB). Peak memory consumption was 727.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:08,428 INFO L168 Benchmark]: TraceAbstraction took 207958.02 ms. Allocated memory was 2.6 GB in the beginning and 5.5 GB in the end (delta: 2.9 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -29.9 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-07-24 14:15:08,434 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2443.72 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 258.95 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 952.46 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 923.3 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 128.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11568.68 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 148.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -114.4 MB). Peak memory consumption was 727.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207958.02 ms. Allocated memory was 2.6 GB in the beginning and 5.5 GB in the end (delta: 2.9 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -29.9 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (327363states) and interpolant automaton (currently 10 states, 6 states before enhancement), while ReachableStatesComputation was computing reachable states (337209 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 207.8s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 164.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1692 SDtfs, 31903 SDslu, 1906 SDs, 0 SdLazy, 64088 SolverSat, 15936 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 125.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6672 GetRequests, 6557 SyntacticMatches, 22 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=327363occurred in iteration=9, 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: 28.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 15590 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 5809 NumberOfCodeBlocks, 5809 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 9062 ConstructedInterpolants, 0 QuantifiedInterpolants, 8158749 SizeOfPredicates, 8 NumberOfNonLiveVariables, 5490 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 8556/9606 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_label32_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-15-08-448.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label32_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-15-08-448.csv Completed graceful shutdown