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/Problem16_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:40:45,324 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:40:45,326 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:40:45,338 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:40:45,339 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:40:45,340 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:40:45,341 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:40:45,343 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:40:45,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:40:45,345 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:40:45,346 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:40:45,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:40:45,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:40:45,348 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:40:45,350 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:40:45,350 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:40:45,351 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:40:45,353 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:40:45,355 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:40:45,357 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:40:45,358 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:40:45,360 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:40:45,362 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:40:45,362 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:40:45,363 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:40:45,364 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:40:45,365 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:40:45,366 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:40:45,367 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:40:45,369 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:40:45,369 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:40:45,370 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:40:45,370 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:40:45,370 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:40:45,372 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:40:45,373 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:40:45,374 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 14:40:45,404 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:40:45,405 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:40:45,406 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:40:45,406 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:40:45,407 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:40:45,407 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:40:45,407 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:40:45,407 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:40:45,407 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:40:45,408 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:40:45,408 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:40:45,409 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:40:45,409 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:40:45,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:40:45,410 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:40:45,410 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:40:45,410 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:40:45,410 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:40:45,410 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:40:45,411 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:40:45,411 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:40:45,411 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:40:45,413 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:40:45,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:40:45,413 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:40:45,413 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:40:45,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:40:45,414 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:40:45,414 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:40:45,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:40:45,414 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:40:45,415 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:40:45,415 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:40:45,467 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:40:45,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:40:45,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:40:45,485 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:40:45,485 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:40:45,486 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c [2018-07-24 14:40:45,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3593f851/4f3c1d061bf34b8c950baae8f4018ddf/FLAG690d925b0 [2018-07-24 14:40:46,207 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:40:46,208 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label07_true-unreach-call.c [2018-07-24 14:40:46,227 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3593f851/4f3c1d061bf34b8c950baae8f4018ddf/FLAG690d925b0 [2018-07-24 14:40:46,249 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3593f851/4f3c1d061bf34b8c950baae8f4018ddf [2018-07-24 14:40:46,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:40:46,266 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:40:46,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:40:46,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:40:46,276 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:40:46,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:40:46" (1/1) ... [2018-07-24 14:40:46,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d853975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:46, skipping insertion in model container [2018-07-24 14:40:46,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:40:46" (1/1) ... [2018-07-24 14:40:46,505 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:40:47,047 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:40:47,064 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:40:47,316 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:40:47,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47 WrapperNode [2018-07-24 14:40:47,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:40:47,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:40:47,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:40:47,413 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:40:47,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:47,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:47,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:40:47,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:40:47,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:40:47,593 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:40:47,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:47,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:47,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:47,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:47,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:48,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:48,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (1/1) ... [2018-07-24 14:40:48,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:40:48,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:40:48,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:40:48,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:40:48,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (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 14:40:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:40:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:40:48,140 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 14:40:48,141 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 14:40:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:40:48,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:40:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:40:48,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:40:48,141 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 14:40:48,142 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 14:40:54,933 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:40:54,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:40:54 BoogieIcfgContainer [2018-07-24 14:40:54,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:40:54,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:40:54,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:40:54,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:40:54,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:40:46" (1/3) ... [2018-07-24 14:40:54,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a5f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:40:54, skipping insertion in model container [2018-07-24 14:40:54,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:40:47" (2/3) ... [2018-07-24 14:40:54,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a5f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:40:54, skipping insertion in model container [2018-07-24 14:40:54,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:40:54" (3/3) ... [2018-07-24 14:40:54,954 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label07_true-unreach-call.c [2018-07-24 14:40:54,968 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:40:54,980 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:40:55,034 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:40:55,034 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:40:55,035 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:40:55,035 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:40:55,035 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:40:55,035 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:40:55,035 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:40:55,035 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:40:55,036 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:40:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-24 14:40:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-24 14:40:55,080 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:40:55,081 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:40:55,082 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 14:40:55,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1118989143, now seen corresponding path program 1 times [2018-07-24 14:40:55,091 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:40:55,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:40:55,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:40:55,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:40:55,142 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:40:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:40:55,637 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:40:55,756 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 14:40:55,758 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:40:55,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:40:55,759 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:40:55,765 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:40:55,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:40:55,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:40:55,784 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-24 14:40:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:40:59,981 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-24 14:40:59,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:40:59,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-07-24 14:40:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:41:00,009 INFO L225 Difference]: With dead ends: 1156 [2018-07-24 14:41:00,009 INFO L226 Difference]: Without dead ends: 744 [2018-07-24 14:41:00,019 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:41:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-24 14:41:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-24 14:41:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-24 14:41:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-07-24 14:41:00,152 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 61 [2018-07-24 14:41:00,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:41:00,153 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-07-24 14:41:00,153 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:41:00,154 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-07-24 14:41:00,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-24 14:41:00,164 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:41:00,164 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 14:41:00,164 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 14:41:00,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1233366974, now seen corresponding path program 1 times [2018-07-24 14:41:00,165 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:41:00,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:00,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:00,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:00,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:41:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:00,432 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:41:00,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:41:00,432 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:41:00,434 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:41:00,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:41:00,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:41:00,435 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-07-24 14:41:06,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:41:06,529 INFO L93 Difference]: Finished difference Result 2189 states and 4061 transitions. [2018-07-24 14:41:06,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:41:06,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-07-24 14:41:06,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:41:06,544 INFO L225 Difference]: With dead ends: 2189 [2018-07-24 14:41:06,544 INFO L226 Difference]: Without dead ends: 1451 [2018-07-24 14:41:06,548 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:41:06,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2018-07-24 14:41:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1441. [2018-07-24 14:41:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2018-07-24 14:41:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2402 transitions. [2018-07-24 14:41:06,611 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2402 transitions. Word has length 133 [2018-07-24 14:41:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:41:06,612 INFO L471 AbstractCegarLoop]: Abstraction has 1441 states and 2402 transitions. [2018-07-24 14:41:06,612 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:41:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2402 transitions. [2018-07-24 14:41:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-24 14:41:06,617 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:41:06,618 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:06,618 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 14:41:06,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2085405745, now seen corresponding path program 1 times [2018-07-24 14:41:06,618 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:41:06,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:06,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:06,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:06,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:41:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:41:06,855 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:06,855 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 14:41:06,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:06,873 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:06,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:07,147 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:07,453 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:41:07,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-07-24 14:41:07,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:41:07,454 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:41:07,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:41:07,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:41:07,456 INFO L87 Difference]: Start difference. First operand 1441 states and 2402 transitions. Second operand 3 states. [2018-07-24 14:41:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:41:11,004 INFO L93 Difference]: Finished difference Result 3559 states and 5861 transitions. [2018-07-24 14:41:11,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:41:11,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2018-07-24 14:41:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:41:11,027 INFO L225 Difference]: With dead ends: 3559 [2018-07-24 14:41:11,028 INFO L226 Difference]: Without dead ends: 2124 [2018-07-24 14:41:11,037 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 323 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:41:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2018-07-24 14:41:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2124. [2018-07-24 14:41:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2018-07-24 14:41:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3333 transitions. [2018-07-24 14:41:11,109 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3333 transitions. Word has length 162 [2018-07-24 14:41:11,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:41:11,110 INFO L471 AbstractCegarLoop]: Abstraction has 2124 states and 3333 transitions. [2018-07-24 14:41:11,110 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:41:11,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3333 transitions. [2018-07-24 14:41:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-24 14:41:11,114 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:41:11,115 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:11,115 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 14:41:11,115 INFO L82 PathProgramCache]: Analyzing trace with hash -421794730, now seen corresponding path program 1 times [2018-07-24 14:41:11,115 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:41:11,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:11,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:11,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:11,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:41:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:11,408 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:41:11,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:41:11,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:41:11,410 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:41:11,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:41:11,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:41:11,410 INFO L87 Difference]: Start difference. First operand 2124 states and 3333 transitions. Second operand 6 states. [2018-07-24 14:41:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:41:16,300 INFO L93 Difference]: Finished difference Result 4959 states and 7691 transitions. [2018-07-24 14:41:16,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:41:16,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-07-24 14:41:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:41:16,317 INFO L225 Difference]: With dead ends: 4959 [2018-07-24 14:41:16,317 INFO L226 Difference]: Without dead ends: 2841 [2018-07-24 14:41:16,326 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 14:41:16,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2018-07-24 14:41:16,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2819. [2018-07-24 14:41:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2819 states. [2018-07-24 14:41:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3921 transitions. [2018-07-24 14:41:16,404 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3921 transitions. Word has length 177 [2018-07-24 14:41:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:41:16,405 INFO L471 AbstractCegarLoop]: Abstraction has 2819 states and 3921 transitions. [2018-07-24 14:41:16,405 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:41:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3921 transitions. [2018-07-24 14:41:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-24 14:41:16,412 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:41:16,413 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:41:16,413 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 14:41:16,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1996464703, now seen corresponding path program 1 times [2018-07-24 14:41:16,414 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:41:16,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:16,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:16,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:16,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:41:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:16,979 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:16,979 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 14:41:16,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:16,987 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:17,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:17,307 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:17,574 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:17,574 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:41:17,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:17,591 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:17,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:18,116 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:41:18,466 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:41:18,467 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:41:18,467 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:41:18,470 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:41:18,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:41:18,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:41:18,472 INFO L87 Difference]: Start difference. First operand 2819 states and 3921 transitions. Second operand 9 states. [2018-07-24 14:41:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:41:27,757 INFO L93 Difference]: Finished difference Result 7871 states and 11446 transitions. [2018-07-24 14:41:27,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 14:41:27,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 307 [2018-07-24 14:41:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:41:27,793 INFO L225 Difference]: With dead ends: 7871 [2018-07-24 14:41:27,793 INFO L226 Difference]: Without dead ends: 5058 [2018-07-24 14:41:27,823 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 1225 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:41:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2018-07-24 14:41:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 5006. [2018-07-24 14:41:27,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5006 states. [2018-07-24 14:41:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 6355 transitions. [2018-07-24 14:41:27,973 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 6355 transitions. Word has length 307 [2018-07-24 14:41:27,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:41:27,974 INFO L471 AbstractCegarLoop]: Abstraction has 5006 states and 6355 transitions. [2018-07-24 14:41:27,974 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:41:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 6355 transitions. [2018-07-24 14:41:27,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-07-24 14:41:27,991 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:41:27,991 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:41:27,992 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 14:41:27,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1330986272, now seen corresponding path program 1 times [2018-07-24 14:41:27,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:41:27,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:27,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:27,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:27,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:41:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:41:28,834 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:28,834 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 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 14:41:28,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:28,853 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:29,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:41:29,326 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:41:29,688 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:29,688 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 14:41:29,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:29,705 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:30,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:41:30,317 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:41:30,587 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:41:30,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:41:30,588 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:41:30,589 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:41:30,589 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:41:30,589 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:41:30,589 INFO L87 Difference]: Start difference. First operand 5006 states and 6355 transitions. Second operand 9 states. [2018-07-24 14:41:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:41:39,147 INFO L93 Difference]: Finished difference Result 10988 states and 14184 transitions. [2018-07-24 14:41:39,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 14:41:39,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 497 [2018-07-24 14:41:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:41:39,181 INFO L225 Difference]: With dead ends: 10988 [2018-07-24 14:41:39,182 INFO L226 Difference]: Without dead ends: 5988 [2018-07-24 14:41:39,215 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2004 GetRequests, 1984 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:41:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5988 states. [2018-07-24 14:41:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5988 to 5932. [2018-07-24 14:41:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5932 states. [2018-07-24 14:41:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 7186 transitions. [2018-07-24 14:41:39,354 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 7186 transitions. Word has length 497 [2018-07-24 14:41:39,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:41:39,355 INFO L471 AbstractCegarLoop]: Abstraction has 5932 states and 7186 transitions. [2018-07-24 14:41:39,355 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:41:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 7186 transitions. [2018-07-24 14:41:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-07-24 14:41:39,373 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:41:39,373 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:41:39,373 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 14:41:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash -223707063, now seen corresponding path program 1 times [2018-07-24 14:41:39,374 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:41:39,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:39,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:39,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:39,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:41:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:39,800 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:41:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 160 proven. 191 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 14:41:40,168 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:40,168 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 14:41:40,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:40,177 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:40,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 14:41:40,515 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 14:41:40,837 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:41:40,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 14:41:40,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:41:40,838 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:41:40,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:41:40,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:41:40,839 INFO L87 Difference]: Start difference. First operand 5932 states and 7186 transitions. Second operand 3 states. [2018-07-24 14:41:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:41:42,979 INFO L93 Difference]: Finished difference Result 11858 states and 14366 transitions. [2018-07-24 14:41:42,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:41:42,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 498 [2018-07-24 14:41:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:41:43,003 INFO L225 Difference]: With dead ends: 11858 [2018-07-24 14:41:43,003 INFO L226 Difference]: Without dead ends: 5932 [2018-07-24 14:41:43,017 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 996 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:41:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2018-07-24 14:41:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 5929. [2018-07-24 14:41:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5929 states. [2018-07-24 14:41:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5929 states to 5929 states and 6934 transitions. [2018-07-24 14:41:43,122 INFO L78 Accepts]: Start accepts. Automaton has 5929 states and 6934 transitions. Word has length 498 [2018-07-24 14:41:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:41:43,123 INFO L471 AbstractCegarLoop]: Abstraction has 5929 states and 6934 transitions. [2018-07-24 14:41:43,123 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:41:43,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5929 states and 6934 transitions. [2018-07-24 14:41:43,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2018-07-24 14:41:43,149 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:41:43,150 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:41:43,150 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 14:41:43,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1600601196, now seen corresponding path program 1 times [2018-07-24 14:41:43,150 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:41:43,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:43,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:43,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:43,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:41:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:41:43,779 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:43,779 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:41:43,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:43,787 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:43,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:41:44,714 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:41:45,618 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:45,618 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:41:45,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:45,634 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:46,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-07-24 14:41:46,233 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (9)] Exception during sending of exit command (exit): Broken pipe [2018-07-24 14:41:46,670 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:41:46,670 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:41:46,670 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:41:46,671 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:41:46,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:41:46,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:41:46,672 INFO L87 Difference]: Start difference. First operand 5929 states and 6934 transitions. Second operand 9 states. [2018-07-24 14:41:54,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:41:54,680 INFO L93 Difference]: Finished difference Result 19981 states and 24441 transitions. [2018-07-24 14:41:54,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 14:41:54,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 615 [2018-07-24 14:41:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:41:54,744 INFO L225 Difference]: With dead ends: 19981 [2018-07-24 14:41:54,744 INFO L226 Difference]: Without dead ends: 10864 [2018-07-24 14:41:54,787 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2483 GetRequests, 2459 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-07-24 14:41:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10864 states. [2018-07-24 14:41:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10864 to 10742. [2018-07-24 14:41:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10742 states. [2018-07-24 14:41:55,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10742 states to 10742 states and 11757 transitions. [2018-07-24 14:41:55,044 INFO L78 Accepts]: Start accepts. Automaton has 10742 states and 11757 transitions. Word has length 615 [2018-07-24 14:41:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:41:55,045 INFO L471 AbstractCegarLoop]: Abstraction has 10742 states and 11757 transitions. [2018-07-24 14:41:55,045 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:41:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand 10742 states and 11757 transitions. [2018-07-24 14:41:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2018-07-24 14:41:55,070 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:41:55,070 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:41:55,071 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 14:41:55,071 INFO L82 PathProgramCache]: Analyzing trace with hash -230157268, now seen corresponding path program 1 times [2018-07-24 14:41:55,071 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:41:55,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:55,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:55,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:41:55,073 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:41:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 577 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-07-24 14:41:56,214 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:56,214 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:41:56,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:56,225 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:56,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 1104 proven. 2 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2018-07-24 14:41:56,803 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 577 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-07-24 14:41:57,445 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:41:57,445 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:41:57,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:41:57,462 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:41:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:41:58,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:41:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 1104 proven. 2 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2018-07-24 14:41:58,350 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:41:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 577 proven. 215 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-07-24 14:41:58,863 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:41:58,864 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:41:58,864 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:41:58,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:41:58,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:41:58,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:41:58,866 INFO L87 Difference]: Start difference. First operand 10742 states and 11757 transitions. Second operand 9 states. [2018-07-24 14:42:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:42:05,093 INFO L93 Difference]: Finished difference Result 26851 states and 31378 transitions. [2018-07-24 14:42:05,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 14:42:05,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 869 [2018-07-24 14:42:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:42:05,195 INFO L225 Difference]: With dead ends: 26851 [2018-07-24 14:42:05,196 INFO L226 Difference]: Without dead ends: 16120 [2018-07-24 14:42:05,261 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3498 GetRequests, 3475 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:42:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16120 states. [2018-07-24 14:42:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16120 to 15762. [2018-07-24 14:42:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15762 states. [2018-07-24 14:42:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15762 states to 15762 states and 18509 transitions. [2018-07-24 14:42:05,885 INFO L78 Accepts]: Start accepts. Automaton has 15762 states and 18509 transitions. Word has length 869 [2018-07-24 14:42:05,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:42:05,887 INFO L471 AbstractCegarLoop]: Abstraction has 15762 states and 18509 transitions. [2018-07-24 14:42:05,887 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:42:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 15762 states and 18509 transitions. [2018-07-24 14:42:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-07-24 14:42:05,952 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:42:05,953 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:05,954 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 14:42:05,954 INFO L82 PathProgramCache]: Analyzing trace with hash 286446492, now seen corresponding path program 1 times [2018-07-24 14:42:05,954 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:42:05,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:42:05,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:42:05,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:42:05,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:42:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:42:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:42:07,506 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:42:07,506 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:42:07,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:42:07,518 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:42:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:42:07,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:42:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:42:08,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:42:08,819 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:42:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:42:10,277 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:42:10,278 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:42:10,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:42:10,294 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:42:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:42:10,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:42:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:42:11,334 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:42:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-07-24 14:42:12,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:42:12,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:42:12,020 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:42:12,023 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:42:12,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:42:12,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:42:12,024 INFO L87 Difference]: Start difference. First operand 15762 states and 18509 transitions. Second operand 9 states. [2018-07-24 14:42:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:42:17,972 INFO L93 Difference]: Finished difference Result 30663 states and 35787 transitions. [2018-07-24 14:42:17,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-24 14:42:17,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 888 [2018-07-24 14:42:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:42:18,034 INFO L225 Difference]: With dead ends: 30663 [2018-07-24 14:42:18,034 INFO L226 Difference]: Without dead ends: 13482 [2018-07-24 14:42:18,121 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3578 GetRequests, 3552 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:42:18,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13482 states. [2018-07-24 14:42:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13482 to 12358. [2018-07-24 14:42:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12358 states. [2018-07-24 14:42:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12358 states to 12358 states and 13299 transitions. [2018-07-24 14:42:18,390 INFO L78 Accepts]: Start accepts. Automaton has 12358 states and 13299 transitions. Word has length 888 [2018-07-24 14:42:18,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:42:18,392 INFO L471 AbstractCegarLoop]: Abstraction has 12358 states and 13299 transitions. [2018-07-24 14:42:18,392 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:42:18,392 INFO L276 IsEmpty]: Start isEmpty. Operand 12358 states and 13299 transitions. [2018-07-24 14:42:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1303 [2018-07-24 14:42:18,473 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:42:18,474 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:18,474 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:42:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2006210571, now seen corresponding path program 1 times [2018-07-24 14:42:18,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:42:18,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:42:18,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:42:18,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:42:18,477 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:42:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:42:19,705 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 14:42:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 781 proven. 283 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2018-07-24 14:42:21,016 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:42:21,016 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:42:21,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:42:21,024 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:42:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:42:21,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:42:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2018-07-24 14:42:22,718 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:42:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 378 proven. 905 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2018-07-24 14:42:25,481 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:42:25,481 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 16 [2018-07-24 14:42:25,481 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:42:25,482 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:42:25,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:42:25,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:42:25,483 INFO L87 Difference]: Start difference. First operand 12358 states and 13299 transitions. Second operand 6 states. [2018-07-24 14:42:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:42:28,742 INFO L93 Difference]: Finished difference Result 25813 states and 27780 transitions. [2018-07-24 14:42:28,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:42:28,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1302 [2018-07-24 14:42:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:42:28,787 INFO L225 Difference]: With dead ends: 25813 [2018-07-24 14:42:28,787 INFO L226 Difference]: Without dead ends: 13466 [2018-07-24 14:42:28,812 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2621 GetRequests, 2602 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:42:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13466 states. [2018-07-24 14:42:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13466 to 12986. [2018-07-24 14:42:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12986 states. [2018-07-24 14:42:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12986 states to 12986 states and 13950 transitions. [2018-07-24 14:42:29,042 INFO L78 Accepts]: Start accepts. Automaton has 12986 states and 13950 transitions. Word has length 1302 [2018-07-24 14:42:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:42:29,043 INFO L471 AbstractCegarLoop]: Abstraction has 12986 states and 13950 transitions. [2018-07-24 14:42:29,043 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:42:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 12986 states and 13950 transitions. [2018-07-24 14:42:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1543 [2018-07-24 14:42:29,241 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:42:29,242 INFO L353 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2018-07-24 14:42:29,242 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:42:29,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1917687888, now seen corresponding path program 1 times [2018-07-24 14:42:29,243 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:42:29,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:42:29,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:42:29,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:42:29,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:42:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:42:30,826 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-07-24 14:42:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 480 proven. 2022 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2018-07-24 14:42:33,813 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:42:33,813 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:42:33,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:42:33,821 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:42:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:42:34,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:42:34,745 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-07-24 14:42:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 1963 proven. 2 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2018-07-24 14:42:35,824 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:42:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 465 proven. 1800 refuted. 0 times theorem prover too weak. 1996 trivial. 0 not checked. [2018-07-24 14:42:39,583 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:42:39,583 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:42:39,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:42:39,598 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:42:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:42:40,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:42:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 2200 proven. 2 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2018-07-24 14:42:42,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:42:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4261 backedges. 700 proven. 919 refuted. 0 times theorem prover too weak. 2642 trivial. 0 not checked. [2018-07-24 14:42:45,893 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:42:45,894 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 5] total 24 [2018-07-24 14:42:45,894 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:42:45,897 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:42:45,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:42:45,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-07-24 14:42:45,898 INFO L87 Difference]: Start difference. First operand 12986 states and 13950 transitions. Second operand 16 states. [2018-07-24 14:43:02,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:43:02,393 INFO L93 Difference]: Finished difference Result 38562 states and 41800 transitions. [2018-07-24 14:43:02,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-24 14:43:02,394 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1542 [2018-07-24 14:43:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:43:02,472 INFO L225 Difference]: With dead ends: 38562 [2018-07-24 14:43:02,472 INFO L226 Difference]: Without dead ends: 25920 [2018-07-24 14:43:02,512 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6250 GetRequests, 6180 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=651, Invalid=2541, Unknown=0, NotChecked=0, Total=3192 [2018-07-24 14:43:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25920 states. [2018-07-24 14:43:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25920 to 23658. [2018-07-24 14:43:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23658 states. [2018-07-24 14:43:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23658 states to 23658 states and 25471 transitions. [2018-07-24 14:43:02,951 INFO L78 Accepts]: Start accepts. Automaton has 23658 states and 25471 transitions. Word has length 1542 [2018-07-24 14:43:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:43:02,952 INFO L471 AbstractCegarLoop]: Abstraction has 23658 states and 25471 transitions. [2018-07-24 14:43:02,952 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:43:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 23658 states and 25471 transitions. [2018-07-24 14:43:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2018-07-24 14:43:03,023 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:43:03,025 INFO L353 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2018-07-24 14:43:03,025 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:43:03,026 INFO L82 PathProgramCache]: Analyzing trace with hash 795244449, now seen corresponding path program 1 times [2018-07-24 14:43:03,026 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:43:03,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:03,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:03,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:03,030 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:43:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:43:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 857 proven. 534 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2018-07-24 14:43:05,360 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:43:05,360 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:43:05,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:05,368 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:43:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:43:05,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:43:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 2843 proven. 2 refuted. 0 times theorem prover too weak. 1439 trivial. 0 not checked. [2018-07-24 14:43:06,850 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:43:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 857 proven. 534 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2018-07-24 14:43:08,167 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:43:08,167 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:43:08,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:08,190 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:43:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:43:09,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:43:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 2843 proven. 2 refuted. 0 times theorem prover too weak. 1439 trivial. 0 not checked. [2018-07-24 14:43:10,184 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:43:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 857 proven. 534 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2018-07-24 14:43:11,332 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:43:11,334 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:43:11,335 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:43:11,336 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:43:11,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:43:11,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:43:11,337 INFO L87 Difference]: Start difference. First operand 23658 states and 25471 transitions. Second operand 9 states. [2018-07-24 14:43:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:43:17,471 INFO L93 Difference]: Finished difference Result 46899 states and 50406 transitions. [2018-07-24 14:43:17,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 14:43:17,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1551 [2018-07-24 14:43:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:43:17,544 INFO L225 Difference]: With dead ends: 46899 [2018-07-24 14:43:17,544 INFO L226 Difference]: Without dead ends: 23587 [2018-07-24 14:43:17,589 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6226 GetRequests, 6203 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:43:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23587 states. [2018-07-24 14:43:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23587 to 19894. [2018-07-24 14:43:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19894 states. [2018-07-24 14:43:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19894 states to 19894 states and 20638 transitions. [2018-07-24 14:43:17,910 INFO L78 Accepts]: Start accepts. Automaton has 19894 states and 20638 transitions. Word has length 1551 [2018-07-24 14:43:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:43:17,911 INFO L471 AbstractCegarLoop]: Abstraction has 19894 states and 20638 transitions. [2018-07-24 14:43:17,911 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:43:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 19894 states and 20638 transitions. [2018-07-24 14:43:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2018-07-24 14:43:17,947 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:43:17,948 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:17,948 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:43:17,948 INFO L82 PathProgramCache]: Analyzing trace with hash -884725309, now seen corresponding path program 1 times [2018-07-24 14:43:17,948 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:43:17,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:17,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:17,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:17,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:43:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:43:18,847 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 14:43:19,221 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-07-24 14:43:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 1052 proven. 486 refuted. 0 times theorem prover too weak. 2148 trivial. 0 not checked. [2018-07-24 14:43:23,696 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:43:23,696 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:43:23,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:23,704 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:43:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:43:24,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:43:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 2166 proven. 6 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2018-07-24 14:43:25,807 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:43:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 345 proven. 2027 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2018-07-24 14:43:30,470 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:43:30,470 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:43:30,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:30,488 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:43:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:43:31,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:43:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 1925 proven. 6 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2018-07-24 14:43:33,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:43:34,735 WARN L169 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-07-24 14:43:34,956 WARN L169 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 14:43:35,978 WARN L169 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-07-24 14:43:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3686 backedges. 347 proven. 2025 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2018-07-24 14:43:43,798 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:43:43,799 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 7, 8] total 33 [2018-07-24 14:43:43,799 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:43:43,801 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-24 14:43:43,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-24 14:43:43,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2018-07-24 14:43:43,802 INFO L87 Difference]: Start difference. First operand 19894 states and 20638 transitions. Second operand 18 states. [2018-07-24 14:43:49,345 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-07-24 14:43:49,948 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-07-24 14:43:50,749 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2018-07-24 14:43:55,041 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-07-24 14:43:57,587 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-07-24 14:43:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:43:57,846 INFO L93 Difference]: Finished difference Result 41138 states and 42696 transitions. [2018-07-24 14:43:57,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 14:43:57,847 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1551 [2018-07-24 14:43:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:43:57,887 INFO L225 Difference]: With dead ends: 41138 [2018-07-24 14:43:57,887 INFO L226 Difference]: Without dead ends: 21590 [2018-07-24 14:43:57,905 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6275 GetRequests, 6206 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=830, Invalid=3726, Unknown=0, NotChecked=0, Total=4556 [2018-07-24 14:43:57,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21590 states. [2018-07-24 14:43:58,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21590 to 19220. [2018-07-24 14:43:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19220 states. [2018-07-24 14:43:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19220 states to 19220 states and 19929 transitions. [2018-07-24 14:43:58,206 INFO L78 Accepts]: Start accepts. Automaton has 19220 states and 19929 transitions. Word has length 1551 [2018-07-24 14:43:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:43:58,207 INFO L471 AbstractCegarLoop]: Abstraction has 19220 states and 19929 transitions. [2018-07-24 14:43:58,207 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-24 14:43:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 19220 states and 19929 transitions. [2018-07-24 14:43:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2018-07-24 14:43:58,253 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:43:58,255 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:58,255 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:43:58,255 INFO L82 PathProgramCache]: Analyzing trace with hash 69235926, now seen corresponding path program 1 times [2018-07-24 14:43:58,256 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:43:58,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:58,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:43:58,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:43:58,257 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:43:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 1172 proven. 283 refuted. 0 times theorem prover too weak. 4151 trivial. 0 not checked. [2018-07-24 14:44:01,156 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:01,156 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:44:01,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:01,164 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:01,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 3919 proven. 6 refuted. 0 times theorem prover too weak. 1681 trivial. 0 not checked. [2018-07-24 14:44:03,045 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:03,212 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-07-24 14:44:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 1772 proven. 607 refuted. 0 times theorem prover too weak. 3227 trivial. 0 not checked. [2018-07-24 14:44:07,001 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:44:07,002 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 22 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 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:44:07,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:44:07,020 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:44:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:44:08,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:44:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 2867 proven. 872 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2018-07-24 14:44:09,625 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:44:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5606 backedges. 1623 proven. 215 refuted. 0 times theorem prover too weak. 3768 trivial. 0 not checked. [2018-07-24 14:44:13,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:44:13,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 7, 5] total 28 [2018-07-24 14:44:13,445 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:44:13,446 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:44:13,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:44:13,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2018-07-24 14:44:13,447 INFO L87 Difference]: Start difference. First operand 19220 states and 19929 transitions. Second operand 16 states. Received shutdown request... [2018-07-24 14:44:35,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-07-24 14:44:35,872 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:44:35,879 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:44:35,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:44:35 BoogieIcfgContainer [2018-07-24 14:44:35,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:44:35,881 INFO L168 Benchmark]: Toolchain (without parser) took 229616.63 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 783.5 MB. Max. memory is 7.1 GB. [2018-07-24 14:44:35,882 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:44:35,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1144.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:44:35,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:44:35,884 INFO L168 Benchmark]: Boogie Preprocessor took 469.05 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -963.6 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:44:35,884 INFO L168 Benchmark]: RCFGBuilder took 6872.98 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 276.6 MB). Peak memory consumption was 276.6 MB. Max. memory is 7.1 GB. [2018-07-24 14:44:35,885 INFO L168 Benchmark]: TraceAbstraction took 220944.34 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 517.5 MB. Max. memory is 7.1 GB. [2018-07-24 14:44:35,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1144.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 469.05 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -963.6 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6872.98 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 276.6 MB). Peak memory consumption was 276.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220944.34 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 517.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was constructing difference of abstraction (19220states) and interpolant automaton (currently 32 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (34193 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 220.8s OverallTime, 15 OverallIterations, 10 TraceHistogramMax, 122.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2190 SDtfs, 39266 SDslu, 3448 SDs, 0 SdLazy, 78214 SolverSat, 8720 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42422 GetRequests, 42038 SyntacticMatches, 60 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23658occurred in iteration=12, 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: 3.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 10552 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 9.8s SatisfiabilityAnalysisTime, 70.1s InterpolantComputationTime, 32870 NumberOfCodeBlocks, 32870 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 53825 ConstructedInterpolants, 0 QuantifiedInterpolants, 259207511 SizeOfPredicates, 30 NumberOfNonLiveVariables, 27808 ConjunctsInSsa, 241 ConjunctsInUnsatCore, 57 InterpolantComputations, 8 PerfectInterpolantSequences, 107854/122856 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/Problem16_label07_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-44-35-903.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label07_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-44-35-903.csv Completed graceful shutdown