java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:30:14,272 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:30:14,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:30:14,286 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:30:14,287 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:30:14,288 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:30:14,289 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:30:14,291 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:30:14,292 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:30:14,293 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:30:14,294 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:30:14,295 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:30:14,296 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:30:14,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:30:14,298 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:30:14,298 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:30:14,299 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:30:14,301 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:30:14,303 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:30:14,305 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:30:14,306 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:30:14,307 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:30:14,310 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:30:14,310 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:30:14,310 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:30:14,311 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:30:14,312 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:30:14,315 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:30:14,316 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:30:14,320 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:30:14,320 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:30:14,321 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:30:14,321 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:30:14,322 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:30:14,323 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:30:14,323 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:30:14,323 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:30:14,338 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:30:14,339 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:30:14,340 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:30:14,340 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:30:14,340 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:30:14,340 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:30:14,340 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:30:14,341 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:30:14,341 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:30:14,341 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:30:14,341 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:30:14,342 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:30:14,342 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:30:14,342 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:30:14,342 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:30:14,343 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:30:14,343 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:30:14,343 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:30:14,343 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:30:14,343 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:30:14,343 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:30:14,344 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:30:14,344 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:30:14,344 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:30:14,344 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:30:14,344 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:30:14,345 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:30:14,345 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:30:14,345 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:30:14,345 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:30:14,345 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:30:14,346 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:30:14,346 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:30:14,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:30:14,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:30:14,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:30:14,417 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:30:14,418 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:30:14,419 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label43_true-unreach-call.c [2018-09-10 12:30:14,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43680663/412d35a07397436db3e349c36039796d/FLAG8981d9563 [2018-09-10 12:30:15,191 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:30:15,192 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label43_true-unreach-call.c [2018-09-10 12:30:15,216 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43680663/412d35a07397436db3e349c36039796d/FLAG8981d9563 [2018-09-10 12:30:15,232 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43680663/412d35a07397436db3e349c36039796d [2018-09-10 12:30:15,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:30:15,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:30:15,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:30:15,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:30:15,258 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:30:15,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:30:15" (1/1) ... [2018-09-10 12:30:15,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3d4853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:15, skipping insertion in model container [2018-09-10 12:30:15,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:30:15" (1/1) ... [2018-09-10 12:30:15,595 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:30:16,356 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:30:16,376 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:30:16,946 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:30:17,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17 WrapperNode [2018-09-10 12:30:17,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:30:17,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:30:17,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:30:17,161 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:30:17,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:17,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:17,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:30:17,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:30:17,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:30:17,433 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:30:18,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:18,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:18,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:18,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:18,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:18,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:18,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... [2018-09-10 12:30:18,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:30:18,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:30:18,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:30:18,363 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:30:18,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:30:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:30:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:30:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:30:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:30:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:30:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:30:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:30:18,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:30:18,439 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:30:18,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:30:28,871 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:30:28,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:30:28 BoogieIcfgContainer [2018-09-10 12:30:28,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:30:28,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:30:28,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:30:28,877 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:30:28,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:30:15" (1/3) ... [2018-09-10 12:30:28,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca8e097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:30:28, skipping insertion in model container [2018-09-10 12:30:28,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:30:17" (2/3) ... [2018-09-10 12:30:28,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca8e097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:30:28, skipping insertion in model container [2018-09-10 12:30:28,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:30:28" (3/3) ... [2018-09-10 12:30:28,881 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label43_true-unreach-call.c [2018-09-10 12:30:28,890 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:30:28,898 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:30:28,961 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:30:28,962 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:30:28,962 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:30:28,962 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:30:28,962 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:30:28,962 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:30:28,963 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:30:28,963 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:30:28,963 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:30:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-10 12:30:29,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-10 12:30:29,013 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:30:29,014 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:30:29,015 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:30:29,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1984155721, now seen corresponding path program 1 times [2018-09-10 12:30:29,024 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:30:29,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:29,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:29,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:29,077 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:30:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:30:29,606 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:30:29,606 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:30:29,607 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:30:29,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:30:29,630 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:30:29,631 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:30:29,634 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-10 12:30:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:30:40,710 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-10 12:30:40,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:30:40,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2018-09-10 12:30:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:30:40,750 INFO L225 Difference]: With dead ends: 2164 [2018-09-10 12:30:40,750 INFO L226 Difference]: Without dead ends: 1554 [2018-09-10 12:30:40,759 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:30:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-10 12:30:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-10 12:30:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-10 12:30:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-10 12:30:40,902 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 69 [2018-09-10 12:30:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:30:40,903 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-10 12:30:40,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:30:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-10 12:30:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-10 12:30:40,919 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:30:40,920 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:30:40,920 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:30:40,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1896805434, now seen corresponding path program 1 times [2018-09-10 12:30:40,922 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:30:40,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:40,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:40,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:40,924 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:30:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:30:41,309 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:30:41,309 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:30:41,309 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:30:41,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:30:41,312 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:30:41,312 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:30:41,312 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-10 12:30:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:30:49,227 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-10 12:30:49,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:30:49,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-09-10 12:30:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:30:49,255 INFO L225 Difference]: With dead ends: 3031 [2018-09-10 12:30:49,255 INFO L226 Difference]: Without dead ends: 1985 [2018-09-10 12:30:49,260 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:30:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-10 12:30:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-10 12:30:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-10 12:30:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-10 12:30:49,356 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 141 [2018-09-10 12:30:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:30:49,357 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-10 12:30:49,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:30:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-10 12:30:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-10 12:30:49,362 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:30:49,362 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:30:49,362 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:30:49,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1238197465, now seen corresponding path program 1 times [2018-09-10 12:30:49,363 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:30:49,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:49,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:49,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:30:49,365 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:30:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:49,900 WARN L175 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-09-10 12:30:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:30:50,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:30:50,198 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:30:50,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:30:50,221 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:30:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:30:50,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:30:56,998 WARN L175 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-10 12:30:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:30:57,129 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:30:58,122 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-09-10 12:30:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:30:58,535 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:30:58,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-10 12:30:58,536 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:30:58,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:30:58,537 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:30:58,537 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:30:58,538 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-09-10 12:31:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:31:32,077 INFO L93 Difference]: Finished difference Result 7532 states and 12909 transitions. [2018-09-10 12:31:32,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:31:32,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-09-10 12:31:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:31:32,117 INFO L225 Difference]: With dead ends: 7532 [2018-09-10 12:31:32,117 INFO L226 Difference]: Without dead ends: 5579 [2018-09-10 12:31:32,133 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:31:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2018-09-10 12:31:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5570. [2018-09-10 12:31:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5570 states. [2018-09-10 12:31:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 9061 transitions. [2018-09-10 12:31:32,310 INFO L78 Accepts]: Start accepts. Automaton has 5570 states and 9061 transitions. Word has length 144 [2018-09-10 12:31:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:31:32,311 INFO L480 AbstractCegarLoop]: Abstraction has 5570 states and 9061 transitions. [2018-09-10 12:31:32,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:31:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5570 states and 9061 transitions. [2018-09-10 12:31:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-10 12:31:32,316 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:32,316 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:31:32,317 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:31:32,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1294195418, now seen corresponding path program 1 times [2018-09-10 12:31:32,317 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:32,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:32,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:32,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:32,318 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:32,770 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:31:32,770 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:31:32,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:32,786 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:31:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:32,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:31:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:32,917 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:31:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:33,181 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:31:33,181 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-10 12:31:33,182 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:31:33,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:31:33,183 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:31:33,183 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:31:33,183 INFO L87 Difference]: Start difference. First operand 5570 states and 9061 transitions. Second operand 3 states. [2018-09-10 12:31:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:31:38,138 INFO L93 Difference]: Finished difference Result 13760 states and 22359 transitions. [2018-09-10 12:31:38,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:31:38,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2018-09-10 12:31:38,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:31:38,185 INFO L225 Difference]: With dead ends: 13760 [2018-09-10 12:31:38,185 INFO L226 Difference]: Without dead ends: 8196 [2018-09-10 12:31:38,218 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 313 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:31:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8196 states. [2018-09-10 12:31:38,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8196 to 8195. [2018-09-10 12:31:38,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8195 states. [2018-09-10 12:31:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8195 states to 8195 states and 12506 transitions. [2018-09-10 12:31:38,437 INFO L78 Accepts]: Start accepts. Automaton has 8195 states and 12506 transitions. Word has length 157 [2018-09-10 12:31:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:31:38,438 INFO L480 AbstractCegarLoop]: Abstraction has 8195 states and 12506 transitions. [2018-09-10 12:31:38,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:31:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8195 states and 12506 transitions. [2018-09-10 12:31:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-10 12:31:38,443 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:38,443 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:31:38,443 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:31:38,444 INFO L82 PathProgramCache]: Analyzing trace with hash 568164894, now seen corresponding path program 1 times [2018-09-10 12:31:38,444 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:38,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:38,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:38,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:38,445 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:38,918 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:31:38,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:31:38,919 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:31:38,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:31:38,919 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:31:38,920 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:31:38,920 INFO L87 Difference]: Start difference. First operand 8195 states and 12506 transitions. Second operand 6 states. [2018-09-10 12:32:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:01,218 INFO L93 Difference]: Finished difference Result 26896 states and 47181 transitions. [2018-09-10 12:32:01,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:32:01,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-09-10 12:32:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:01,359 INFO L225 Difference]: With dead ends: 26896 [2018-09-10 12:32:01,359 INFO L226 Difference]: Without dead ends: 18707 [2018-09-10 12:32:01,407 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:32:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18707 states. [2018-09-10 12:32:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18707 to 18455. [2018-09-10 12:32:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18455 states. [2018-09-10 12:32:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18455 states to 18455 states and 28985 transitions. [2018-09-10 12:32:02,022 INFO L78 Accepts]: Start accepts. Automaton has 18455 states and 28985 transitions. Word has length 159 [2018-09-10 12:32:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:02,022 INFO L480 AbstractCegarLoop]: Abstraction has 18455 states and 28985 transitions. [2018-09-10 12:32:02,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:32:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 18455 states and 28985 transitions. [2018-09-10 12:32:02,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-10 12:32:02,040 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:02,040 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:02,040 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:02,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1048113515, now seen corresponding path program 1 times [2018-09-10 12:32:02,041 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:02,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:02,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:02,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:02,042 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 124 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:32:02,554 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:02,555 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:32:02,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:02,574 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:02,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:32:03,239 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 124 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:32:04,069 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:32:04,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 12:32:04,070 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:04,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:32:04,070 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:32:04,071 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:32:04,071 INFO L87 Difference]: Start difference. First operand 18455 states and 28985 transitions. Second operand 5 states. [2018-09-10 12:32:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:16,759 INFO L93 Difference]: Finished difference Result 53892 states and 91343 transitions. [2018-09-10 12:32:16,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:32:16,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2018-09-10 12:32:16,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:16,937 INFO L225 Difference]: With dead ends: 53892 [2018-09-10 12:32:16,937 INFO L226 Difference]: Without dead ends: 35443 [2018-09-10 12:32:17,035 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:32:17,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35443 states. [2018-09-10 12:32:17,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35443 to 35237. [2018-09-10 12:32:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35237 states. [2018-09-10 12:32:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35237 states to 35237 states and 52054 transitions. [2018-09-10 12:32:17,968 INFO L78 Accepts]: Start accepts. Automaton has 35237 states and 52054 transitions. Word has length 229 [2018-09-10 12:32:17,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:17,969 INFO L480 AbstractCegarLoop]: Abstraction has 35237 states and 52054 transitions. [2018-09-10 12:32:17,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:32:17,969 INFO L276 IsEmpty]: Start isEmpty. Operand 35237 states and 52054 transitions. [2018-09-10 12:32:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-09-10 12:32:17,986 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:17,986 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:17,986 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1131046817, now seen corresponding path program 1 times [2018-09-10 12:32:17,987 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:17,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:17,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:17,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:17,988 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:18,284 WARN L175 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:32:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 124 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:32:18,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:18,675 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:32:18,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:18,690 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:18,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:32:19,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 124 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:32:19,761 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:32:19,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 12:32:19,761 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:19,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:32:19,762 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:32:19,762 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:32:19,762 INFO L87 Difference]: Start difference. First operand 35237 states and 52054 transitions. Second operand 5 states. [2018-09-10 12:32:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:26,772 INFO L93 Difference]: Finished difference Result 70500 states and 104750 transitions. [2018-09-10 12:32:26,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:32:26,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2018-09-10 12:32:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:26,873 INFO L225 Difference]: With dead ends: 70500 [2018-09-10 12:32:26,873 INFO L226 Difference]: Without dead ends: 29043 [2018-09-10 12:32:26,970 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:32:26,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29043 states. [2018-09-10 12:32:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29043 to 28968. [2018-09-10 12:32:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28968 states. [2018-09-10 12:32:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28968 states to 28968 states and 37474 transitions. [2018-09-10 12:32:27,498 INFO L78 Accepts]: Start accepts. Automaton has 28968 states and 37474 transitions. Word has length 239 [2018-09-10 12:32:27,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:27,498 INFO L480 AbstractCegarLoop]: Abstraction has 28968 states and 37474 transitions. [2018-09-10 12:32:27,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:32:27,498 INFO L276 IsEmpty]: Start isEmpty. Operand 28968 states and 37474 transitions. [2018-09-10 12:32:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-10 12:32:27,506 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:27,507 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:27,507 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1298415097, now seen corresponding path program 1 times [2018-09-10 12:32:27,507 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:27,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:27,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:27,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:27,509 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:28,061 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:28,061 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:32:28,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:28,080 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:28,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:28,591 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:28,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:28,805 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:32:28,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:28,820 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:29,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:29,458 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:29,603 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:32:29,603 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:32:29,603 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:32:29,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:32:29,605 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:32:29,605 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:32:29,605 INFO L87 Difference]: Start difference. First operand 28968 states and 37474 transitions. Second operand 9 states. [2018-09-10 12:32:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:37,347 INFO L93 Difference]: Finished difference Result 56088 states and 72894 transitions. [2018-09-10 12:32:37,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 12:32:37,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2018-09-10 12:32:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:37,436 INFO L225 Difference]: With dead ends: 56088 [2018-09-10 12:32:37,436 INFO L226 Difference]: Without dead ends: 27126 [2018-09-10 12:32:37,490 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 1008 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-10 12:32:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27126 states. [2018-09-10 12:32:37,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27126 to 27100. [2018-09-10 12:32:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27100 states. [2018-09-10 12:32:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27100 states to 27100 states and 32406 transitions. [2018-09-10 12:32:37,970 INFO L78 Accepts]: Start accepts. Automaton has 27100 states and 32406 transitions. Word has length 254 [2018-09-10 12:32:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:37,971 INFO L480 AbstractCegarLoop]: Abstraction has 27100 states and 32406 transitions. [2018-09-10 12:32:37,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:32:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 27100 states and 32406 transitions. [2018-09-10 12:32:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-09-10 12:32:37,987 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:37,987 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:37,987 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:37,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2120663977, now seen corresponding path program 1 times [2018-09-10 12:32:37,988 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:37,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:37,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:37,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:37,989 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-10 12:32:38,352 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:32:38,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:32:38,353 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:38,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:32:38,354 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:32:38,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:32:38,354 INFO L87 Difference]: Start difference. First operand 27100 states and 32406 transitions. Second operand 4 states. [2018-09-10 12:32:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:45,177 INFO L93 Difference]: Finished difference Result 74253 states and 90998 transitions. [2018-09-10 12:32:45,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:32:45,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2018-09-10 12:32:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:45,270 INFO L225 Difference]: With dead ends: 74253 [2018-09-10 12:32:45,270 INFO L226 Difference]: Without dead ends: 33815 [2018-09-10 12:32:45,359 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:32:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33815 states. [2018-09-10 12:32:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33815 to 33776. [2018-09-10 12:32:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33776 states. [2018-09-10 12:32:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33776 states to 33776 states and 40567 transitions. [2018-09-10 12:32:45,954 INFO L78 Accepts]: Start accepts. Automaton has 33776 states and 40567 transitions. Word has length 336 [2018-09-10 12:32:45,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:45,955 INFO L480 AbstractCegarLoop]: Abstraction has 33776 states and 40567 transitions. [2018-09-10 12:32:45,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:32:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 33776 states and 40567 transitions. [2018-09-10 12:32:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-09-10 12:32:45,973 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:45,974 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:45,974 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:45,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1811063133, now seen corresponding path program 1 times [2018-09-10 12:32:45,975 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:45,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:45,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:45,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:45,976 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:46,516 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:46,517 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:32:46,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:46,527 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:46,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:47,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:48,091 WARN L175 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 12:32:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:48,438 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:32:48,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-10 12:32:48,439 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:48,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:32:48,440 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:32:48,440 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:32:48,440 INFO L87 Difference]: Start difference. First operand 33776 states and 40567 transitions. Second operand 6 states. [2018-09-10 12:32:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:54,706 INFO L93 Difference]: Finished difference Result 70627 states and 85217 transitions. [2018-09-10 12:32:54,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:32:54,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 417 [2018-09-10 12:32:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:54,797 INFO L225 Difference]: With dead ends: 70627 [2018-09-10 12:32:54,797 INFO L226 Difference]: Without dead ends: 35974 [2018-09-10 12:32:54,841 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 833 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:32:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35974 states. [2018-09-10 12:32:55,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35974 to 34206. [2018-09-10 12:32:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34206 states. [2018-09-10 12:32:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34206 states to 34206 states and 41068 transitions. [2018-09-10 12:32:55,786 INFO L78 Accepts]: Start accepts. Automaton has 34206 states and 41068 transitions. Word has length 417 [2018-09-10 12:32:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:55,787 INFO L480 AbstractCegarLoop]: Abstraction has 34206 states and 41068 transitions. [2018-09-10 12:32:55,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:32:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 34206 states and 41068 transitions. [2018-09-10 12:32:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2018-09-10 12:32:55,826 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:55,827 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:55,827 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:55,828 INFO L82 PathProgramCache]: Analyzing trace with hash -797458630, now seen corresponding path program 1 times [2018-09-10 12:32:55,828 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:55,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:55,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:55,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:55,829 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-09-10 12:32:56,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:56,230 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:32:56,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:56,237 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:56,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 520 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-09-10 12:32:56,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-09-10 12:32:56,833 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:32:56,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-10 12:32:56,834 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:56,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:32:56,835 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:32:56,835 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:32:56,835 INFO L87 Difference]: Start difference. First operand 34206 states and 41068 transitions. Second operand 3 states. [2018-09-10 12:33:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:02,137 INFO L93 Difference]: Finished difference Result 73706 states and 89910 transitions. [2018-09-10 12:33:02,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:33:02,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 605 [2018-09-10 12:33:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:02,238 INFO L225 Difference]: With dead ends: 73706 [2018-09-10 12:33:02,239 INFO L226 Difference]: Without dead ends: 39506 [2018-09-10 12:33:02,293 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1210 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:33:02,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39506 states. [2018-09-10 12:33:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39506 to 39462. [2018-09-10 12:33:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39462 states. [2018-09-10 12:33:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39462 states to 39462 states and 47848 transitions. [2018-09-10 12:33:03,031 INFO L78 Accepts]: Start accepts. Automaton has 39462 states and 47848 transitions. Word has length 605 [2018-09-10 12:33:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:03,032 INFO L480 AbstractCegarLoop]: Abstraction has 39462 states and 47848 transitions. [2018-09-10 12:33:03,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:33:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 39462 states and 47848 transitions. [2018-09-10 12:33:03,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-09-10 12:33:03,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:03,113 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 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] [2018-09-10 12:33:03,113 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:03,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1076385244, now seen corresponding path program 1 times [2018-09-10 12:33:03,114 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:03,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:03,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:03,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:03,116 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2018-09-10 12:33:03,950 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:33:03,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:33:03,950 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:03,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:33:03,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:33:03,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:33:03,951 INFO L87 Difference]: Start difference. First operand 39462 states and 47848 transitions. Second operand 3 states. [2018-09-10 12:33:07,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:07,117 INFO L93 Difference]: Finished difference Result 87207 states and 107053 transitions. [2018-09-10 12:33:07,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:33:07,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 753 [2018-09-10 12:33:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:07,636 INFO L225 Difference]: With dead ends: 87207 [2018-09-10 12:33:07,636 INFO L226 Difference]: Without dead ends: 47750 [2018-09-10 12:33:07,674 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:33:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47750 states. [2018-09-10 12:33:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47750 to 43821. [2018-09-10 12:33:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43821 states. [2018-09-10 12:33:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43821 states to 43821 states and 52194 transitions. [2018-09-10 12:33:08,353 INFO L78 Accepts]: Start accepts. Automaton has 43821 states and 52194 transitions. Word has length 753 [2018-09-10 12:33:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:08,355 INFO L480 AbstractCegarLoop]: Abstraction has 43821 states and 52194 transitions. [2018-09-10 12:33:08,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:33:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 43821 states and 52194 transitions. [2018-09-10 12:33:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2018-09-10 12:33:08,437 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:08,438 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:33:08,438 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:08,439 INFO L82 PathProgramCache]: Analyzing trace with hash -95388264, now seen corresponding path program 1 times [2018-09-10 12:33:08,439 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:08,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:08,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:08,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:08,440 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 586 proven. 6 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-10 12:33:09,840 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:09,841 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:33:09,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:09,849 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:10,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 586 proven. 6 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-10 12:33:11,052 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 586 proven. 247 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 12:33:12,041 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:12,041 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 12:33:12,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:12,057 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:12,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 586 proven. 6 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-09-10 12:33:13,409 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 586 proven. 247 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 12:33:14,542 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:33:14,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 15 [2018-09-10 12:33:14,543 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:33:14,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:33:14,545 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:33:14,545 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:33:14,545 INFO L87 Difference]: Start difference. First operand 43821 states and 52194 transitions. Second operand 9 states. [2018-09-10 12:33:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:33,425 INFO L93 Difference]: Finished difference Result 123291 states and 150447 transitions. [2018-09-10 12:33:33,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:33:33,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 809 [2018-09-10 12:33:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:33,634 INFO L225 Difference]: With dead ends: 123291 [2018-09-10 12:33:33,634 INFO L226 Difference]: Without dead ends: 79910 [2018-09-10 12:33:33,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3258 GetRequests, 3238 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:33:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79910 states. [2018-09-10 12:33:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79910 to 70539. [2018-09-10 12:33:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70539 states. [2018-09-10 12:33:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70539 states to 70539 states and 83521 transitions. [2018-09-10 12:33:34,939 INFO L78 Accepts]: Start accepts. Automaton has 70539 states and 83521 transitions. Word has length 809 [2018-09-10 12:33:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:34,939 INFO L480 AbstractCegarLoop]: Abstraction has 70539 states and 83521 transitions. [2018-09-10 12:33:34,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:33:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 70539 states and 83521 transitions. [2018-09-10 12:33:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-09-10 12:33:35,020 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:35,021 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:33:35,021 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:35,021 INFO L82 PathProgramCache]: Analyzing trace with hash -8604539, now seen corresponding path program 1 times [2018-09-10 12:33:35,021 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:35,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:35,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:35,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:35,022 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 263 proven. 395 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-09-10 12:33:36,360 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:36,360 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:33:36,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:36,369 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:36,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:39,047 WARN L175 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-09-10 12:33:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 471 proven. 2 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2018-09-10 12:33:39,314 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:41,512 WARN L175 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-09-10 12:33:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 263 proven. 403 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-09-10 12:33:42,775 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:42,775 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 12:33:42,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:42,790 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:43,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 471 proven. 2 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2018-09-10 12:33:43,920 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 263 proven. 403 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-09-10 12:33:45,263 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:33:45,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 15 [2018-09-10 12:33:45,264 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:33:45,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 12:33:45,266 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 12:33:45,266 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:33:45,266 INFO L87 Difference]: Start difference. First operand 70539 states and 83521 transitions. Second operand 10 states. Received shutdown request... [2018-09-10 12:34:12,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:34:12,488 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:34:12,494 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:34:12,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:34:12 BoogieIcfgContainer [2018-09-10 12:34:12,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:34:12,495 INFO L168 Benchmark]: Toolchain (without parser) took 237250.39 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -406.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-10 12:34:12,496 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:34:12,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1911.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:34:12,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 271.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:34:12,499 INFO L168 Benchmark]: Boogie Preprocessor took 929.66 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 935.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:34:12,499 INFO L168 Benchmark]: RCFGBuilder took 10509.82 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 508.0 MB). Peak memory consumption was 508.0 MB. Max. memory is 7.1 GB. [2018-09-10 12:34:12,500 INFO L168 Benchmark]: TraceAbstraction took 223621.22 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 10.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-10 12:34:12,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1911.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 271.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 929.66 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 935.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10509.82 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 508.0 MB). Peak memory consumption was 508.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223621.22 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 10.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 194]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 194). Cancelled while BasicCegarLoop was constructing difference of abstraction (70539states) and FLOYD_HOARE automaton (currently 20 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (155371 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 223.5s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 177.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3800 SDtfs, 22636 SDslu, 3391 SDs, 0 SdLazy, 47524 SolverSat, 9466 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 155.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11241 GetRequests, 11084 SyntacticMatches, 24 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 19.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70539occurred in iteration=13, 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: 7.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 16248 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 32.1s InterpolantComputationTime, 10671 NumberOfCodeBlocks, 10671 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 16178 ConstructedInterpolants, 266 QuantifiedInterpolants, 28732460 SizeOfPredicates, 20 NumberOfNonLiveVariables, 8255 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 38 InterpolantComputations, 12 PerfectInterpolantSequences, 13399/15652 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/Problem17_label43_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-34-12-523.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label43_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-34-12-523.csv Completed graceful shutdown