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_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:28:18,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:28:18,225 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:28:18,241 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:28:18,243 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:28:18,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:28:18,245 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:28:18,247 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:28:18,248 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:28:18,249 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:28:18,250 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:28:18,250 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:28:18,251 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:28:18,252 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:28:18,254 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:28:18,254 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:28:18,255 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:28:18,258 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:28:18,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:28:18,263 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:28:18,271 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:28:18,272 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:28:18,275 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:28:18,275 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:28:18,275 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:28:18,279 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:28:18,280 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:28:18,284 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:28:18,285 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:28:18,286 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:28:18,286 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:28:18,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:28:18,288 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:28:18,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:28:18,290 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:28:18,292 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:28:18,293 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 12:28:18,315 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:28:18,316 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:28:18,316 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:28:18,317 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:28:18,317 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:28:18,317 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:28:18,317 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:28:18,321 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:28:18,321 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:28:18,321 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:28:18,321 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:28:18,322 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:28:18,322 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:28:18,324 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:28:18,324 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:28:18,324 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:28:18,324 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:28:18,324 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:28:18,324 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:28:18,325 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:28:18,325 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:28:18,325 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:28:18,325 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:28:18,327 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:28:18,327 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:28:18,327 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:28:18,328 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:28:18,328 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:28:18,328 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:28:18,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:28:18,328 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:28:18,329 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:28:18,329 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:28:18,386 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:28:18,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:28:18,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:28:18,412 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:28:18,412 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:28:18,413 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label38_true-unreach-call.c [2018-09-10 12:28:18,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738b5c275/e01a2d3ec01c4065acfb42531349dfb5/FLAGe76ae9acf [2018-09-10 12:28:19,181 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:28:19,182 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label38_true-unreach-call.c [2018-09-10 12:28:19,220 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738b5c275/e01a2d3ec01c4065acfb42531349dfb5/FLAGe76ae9acf [2018-09-10 12:28:19,240 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/738b5c275/e01a2d3ec01c4065acfb42531349dfb5 [2018-09-10 12:28:19,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:28:19,255 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:28:19,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:28:19,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:28:19,267 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:28:19,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:28:19" (1/1) ... [2018-09-10 12:28:19,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb17877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:19, skipping insertion in model container [2018-09-10 12:28:19,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:28:19" (1/1) ... [2018-09-10 12:28:19,573 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:28:20,310 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:28:20,329 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:28:20,950 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:28:21,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21 WrapperNode [2018-09-10 12:28:21,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:28:21,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:28:21,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:28:21,202 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:28:21,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:21,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:21,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:28:21,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:28:21,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:28:21,481 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:28:22,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:22,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:22,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:22,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:22,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:22,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:22,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (1/1) ... [2018-09-10 12:28:22,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:28:22,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:28:22,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:28:22,380 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:28:22,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (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 12:28:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:28:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:28:22,450 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 12:28:22,451 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 12:28:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:28:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:28:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:28:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:28:22,452 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 12:28:22,452 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 12:28:32,968 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:28:32,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:28:32 BoogieIcfgContainer [2018-09-10 12:28:32,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:28:32,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:28:32,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:28:32,974 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:28:32,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:28:19" (1/3) ... [2018-09-10 12:28:32,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221508a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:28:32, skipping insertion in model container [2018-09-10 12:28:32,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:28:21" (2/3) ... [2018-09-10 12:28:32,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221508a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:28:32, skipping insertion in model container [2018-09-10 12:28:32,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:28:32" (3/3) ... [2018-09-10 12:28:32,978 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label38_true-unreach-call.c [2018-09-10 12:28:32,987 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:28:32,995 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:28:33,052 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:28:33,053 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:28:33,053 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:28:33,054 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:28:33,054 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:28:33,054 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:28:33,054 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:28:33,054 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:28:33,054 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:28:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-10 12:28:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-10 12:28:33,110 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:28:33,111 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] [2018-09-10 12:28:33,112 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 12:28:33,117 INFO L82 PathProgramCache]: Analyzing trace with hash -893569215, now seen corresponding path program 1 times [2018-09-10 12:28:33,119 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:28:33,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:28:33,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:28:33,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:28:33,171 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:28:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:28:33,677 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 12:28:33,679 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:28:33,680 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:28:33,680 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:28:33,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:28:33,704 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:28:33,705 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:28:33,708 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-10 12:28:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:28:51,306 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-09-10 12:28:51,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:28:51,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-10 12:28:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:28:51,344 INFO L225 Difference]: With dead ends: 2162 [2018-09-10 12:28:51,345 INFO L226 Difference]: Without dead ends: 1552 [2018-09-10 12:28:51,358 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 12:28:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-09-10 12:28:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-09-10 12:28:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-09-10 12:28:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-09-10 12:28:51,501 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 59 [2018-09-10 12:28:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:28:51,502 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-09-10 12:28:51,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:28:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-09-10 12:28:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-10 12:28:51,512 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:28:51,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:51,513 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 12:28:51,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1790006234, now seen corresponding path program 1 times [2018-09-10 12:28:51,514 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:28:51,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:28:51,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:28:51,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:28:51,515 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:28:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:28:51,920 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:28:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:28:52,297 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:28:52,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:28:52,297 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:28:52,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:28:52,299 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:28:52,300 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:28:52,300 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-09-10 12:29:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:29:01,212 INFO L93 Difference]: Finished difference Result 4431 states and 8042 transitions. [2018-09-10 12:29:01,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:29:01,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-09-10 12:29:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:29:01,242 INFO L225 Difference]: With dead ends: 4431 [2018-09-10 12:29:01,242 INFO L226 Difference]: Without dead ends: 2912 [2018-09-10 12:29:01,249 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:29:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-09-10 12:29:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2878. [2018-09-10 12:29:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2018-09-10 12:29:01,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4713 transitions. [2018-09-10 12:29:01,360 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4713 transitions. Word has length 135 [2018-09-10 12:29:01,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:29:01,361 INFO L480 AbstractCegarLoop]: Abstraction has 2878 states and 4713 transitions. [2018-09-10 12:29:01,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:29:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4713 transitions. [2018-09-10 12:29:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-10 12:29:01,368 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:29:01,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:01,369 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 12:29:01,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1801941666, now seen corresponding path program 1 times [2018-09-10 12:29:01,370 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:29:01,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:01,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:29:01,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:01,371 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:29:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:29:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:29:01,646 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:29:01,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:29:01,646 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:29:01,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:29:01,647 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:29:01,647 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:29:01,648 INFO L87 Difference]: Start difference. First operand 2878 states and 4713 transitions. Second operand 6 states. [2018-09-10 12:29:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:29:07,706 INFO L93 Difference]: Finished difference Result 7152 states and 11703 transitions. [2018-09-10 12:29:07,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:29:07,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-09-10 12:29:07,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:29:07,737 INFO L225 Difference]: With dead ends: 7152 [2018-09-10 12:29:07,738 INFO L226 Difference]: Without dead ends: 4280 [2018-09-10 12:29:07,751 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:29:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2018-09-10 12:29:07,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4238. [2018-09-10 12:29:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4238 states. [2018-09-10 12:29:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5870 transitions. [2018-09-10 12:29:07,896 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5870 transitions. Word has length 139 [2018-09-10 12:29:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:29:07,897 INFO L480 AbstractCegarLoop]: Abstraction has 4238 states and 5870 transitions. [2018-09-10 12:29:07,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:29:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5870 transitions. [2018-09-10 12:29:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-10 12:29:07,902 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:29:07,902 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, 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 12:29:07,903 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 12:29:07,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1032620341, now seen corresponding path program 1 times [2018-09-10 12:29:07,903 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:29:07,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:07,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:29:07,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:07,905 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:29:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:29:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-10 12:29:08,168 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:29:08,169 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:29:08,169 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:29:08,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:29:08,170 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:29:08,170 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:29:08,256 INFO L87 Difference]: Start difference. First operand 4238 states and 5870 transitions. Second operand 3 states. [2018-09-10 12:29:15,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:29:15,205 INFO L93 Difference]: Finished difference Result 12003 states and 16910 transitions. [2018-09-10 12:29:15,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:29:15,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-09-10 12:29:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:29:15,246 INFO L225 Difference]: With dead ends: 12003 [2018-09-10 12:29:15,247 INFO L226 Difference]: Without dead ends: 7771 [2018-09-10 12:29:15,279 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 12:29:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2018-09-10 12:29:15,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7770. [2018-09-10 12:29:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7770 states. [2018-09-10 12:29:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 9967 transitions. [2018-09-10 12:29:15,468 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 9967 transitions. Word has length 223 [2018-09-10 12:29:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:29:15,469 INFO L480 AbstractCegarLoop]: Abstraction has 7770 states and 9967 transitions. [2018-09-10 12:29:15,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:29:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 9967 transitions. [2018-09-10 12:29:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-10 12:29:15,478 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:29:15,478 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, 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] [2018-09-10 12:29:15,478 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 12:29:15,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1436411273, now seen corresponding path program 1 times [2018-09-10 12:29:15,479 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:29:15,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:15,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:29:15,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:15,480 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:29:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:29:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 122 proven. 50 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:29:15,864 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:29:15,866 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 12:29:15,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:29:15,885 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:29:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:29:16,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:29:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-10 12:29:16,136 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:29:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-10 12:29:16,398 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:29:16,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-09-10 12:29:16,399 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:29:16,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:29:16,400 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:29:16,400 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:29:16,400 INFO L87 Difference]: Start difference. First operand 7770 states and 9967 transitions. Second operand 3 states. [2018-09-10 12:29:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:29:23,451 INFO L93 Difference]: Finished difference Result 22583 states and 29818 transitions. [2018-09-10 12:29:23,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:29:23,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2018-09-10 12:29:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:29:23,528 INFO L225 Difference]: With dead ends: 22583 [2018-09-10 12:29:23,529 INFO L226 Difference]: Without dead ends: 14819 [2018-09-10 12:29:23,595 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 485 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:29:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14819 states. [2018-09-10 12:29:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14819 to 14817. [2018-09-10 12:29:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-09-10 12:29:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 18289 transitions. [2018-09-10 12:29:23,980 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 18289 transitions. Word has length 242 [2018-09-10 12:29:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:29:23,980 INFO L480 AbstractCegarLoop]: Abstraction has 14817 states and 18289 transitions. [2018-09-10 12:29:23,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:29:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 18289 transitions. [2018-09-10 12:29:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-09-10 12:29:24,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:29:24,003 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:29:24,003 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 12:29:24,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1855622684, now seen corresponding path program 1 times [2018-09-10 12:29:24,003 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:29:24,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:24,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:29:24,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:29:24,005 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:29:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:29:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-10 12:29:24,767 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:29:24,767 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 12:29:24,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:29:24,776 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:29:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:29:24,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:29:25,474 WARN L175 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-09-10 12:29:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-10 12:29:26,036 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:29:26,195 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 12:29:30,988 WARN L175 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-09-10 12:29:31,738 WARN L175 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-09-10 12:29:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:29:32,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:29:32,545 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:29:32,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:29:32,563 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:29:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:29:32,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:29:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:29:37,632 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:29:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 109 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:29:39,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:29:39,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 7, 8] total 27 [2018-09-10 12:29:39,031 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:29:39,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-10 12:29:39,032 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-10 12:29:39,032 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=574, Unknown=3, NotChecked=0, Total=702 [2018-09-10 12:29:39,032 INFO L87 Difference]: Start difference. First operand 14817 states and 18289 transitions. Second operand 14 states. [2018-09-10 12:29:39,317 WARN L175 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-09-10 12:29:43,048 WARN L175 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2018-09-10 12:29:59,815 WARN L175 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-09-10 12:30:18,921 WARN L175 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-09-10 12:30:31,978 WARN L175 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-09-10 12:31:14,378 WARN L175 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-10 12:31:25,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:31:25,995 INFO L93 Difference]: Finished difference Result 109334 states and 164296 transitions. [2018-09-10 12:31:25,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-09-10 12:31:25,996 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 289 [2018-09-10 12:31:25,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:31:27,046 INFO L225 Difference]: With dead ends: 109334 [2018-09-10 12:31:27,046 INFO L226 Difference]: Without dead ends: 94011 [2018-09-10 12:31:27,454 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1304 GetRequests, 1137 SyntacticMatches, 3 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 10115 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=4286, Invalid=23101, Unknown=3, NotChecked=0, Total=27390 [2018-09-10 12:31:27,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94011 states. [2018-09-10 12:31:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94011 to 89994. [2018-09-10 12:31:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89994 states. [2018-09-10 12:31:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89994 states to 89994 states and 117245 transitions. [2018-09-10 12:31:31,043 INFO L78 Accepts]: Start accepts. Automaton has 89994 states and 117245 transitions. Word has length 289 [2018-09-10 12:31:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:31:31,044 INFO L480 AbstractCegarLoop]: Abstraction has 89994 states and 117245 transitions. [2018-09-10 12:31:31,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-10 12:31:31,044 INFO L276 IsEmpty]: Start isEmpty. Operand 89994 states and 117245 transitions. [2018-09-10 12:31:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-10 12:31:31,088 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:31,088 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:31:31,088 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 12:31:31,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1866231012, now seen corresponding path program 1 times [2018-09-10 12:31:31,089 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:31,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:31,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:31,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:31,090 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-10 12:31:31,367 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:31:31,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:31:31,368 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:31:31,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:31:31,368 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:31:31,369 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:31:31,369 INFO L87 Difference]: Start difference. First operand 89994 states and 117245 transitions. Second operand 3 states. [2018-09-10 12:31:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:31:39,996 INFO L93 Difference]: Finished difference Result 212619 states and 289640 transitions. [2018-09-10 12:31:39,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:31:39,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 294 [2018-09-10 12:31:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:31:40,858 INFO L225 Difference]: With dead ends: 212619 [2018-09-10 12:31:40,858 INFO L226 Difference]: Without dead ends: 122673 [2018-09-10 12:31:42,353 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 12:31:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122673 states. [2018-09-10 12:31:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122673 to 122651. [2018-09-10 12:31:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122651 states. [2018-09-10 12:31:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122651 states to 122651 states and 159941 transitions. [2018-09-10 12:31:47,392 INFO L78 Accepts]: Start accepts. Automaton has 122651 states and 159941 transitions. Word has length 294 [2018-09-10 12:31:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:31:47,393 INFO L480 AbstractCegarLoop]: Abstraction has 122651 states and 159941 transitions. [2018-09-10 12:31:47,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:31:47,393 INFO L276 IsEmpty]: Start isEmpty. Operand 122651 states and 159941 transitions. [2018-09-10 12:31:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-09-10 12:31:47,490 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:47,490 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:31:47,491 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 12:31:47,491 INFO L82 PathProgramCache]: Analyzing trace with hash -593336430, now seen corresponding path program 1 times [2018-09-10 12:31:47,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:47,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:47,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:47,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:47,492 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 164 proven. 245 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-10 12:31:47,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:31:47,925 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 12:31:47,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:47,935 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:31:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:48,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:31:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-09-10 12:31:48,428 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:31:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 156 proven. 177 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:31:48,889 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:31:48,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-10 12:31:48,889 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:31:48,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:31:48,890 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:31:48,890 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:31:48,890 INFO L87 Difference]: Start difference. First operand 122651 states and 159941 transitions. Second operand 5 states. [2018-09-10 12:32:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:04,992 INFO L93 Difference]: Finished difference Result 259566 states and 327881 transitions. [2018-09-10 12:32:04,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:32:04,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 371 [2018-09-10 12:32:04,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:05,466 INFO L225 Difference]: With dead ends: 259566 [2018-09-10 12:32:05,466 INFO L226 Difference]: Without dead ends: 136958 [2018-09-10 12:32:06,060 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:32:06,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136958 states. [2018-09-10 12:32:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136958 to 135155. [2018-09-10 12:32:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135155 states. [2018-09-10 12:32:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135155 states to 135155 states and 162546 transitions. [2018-09-10 12:32:09,581 INFO L78 Accepts]: Start accepts. Automaton has 135155 states and 162546 transitions. Word has length 371 [2018-09-10 12:32:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:09,581 INFO L480 AbstractCegarLoop]: Abstraction has 135155 states and 162546 transitions. [2018-09-10 12:32:09,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:32:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 135155 states and 162546 transitions. [2018-09-10 12:32:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-09-10 12:32:09,664 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:09,664 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:09,665 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 12:32:09,665 INFO L82 PathProgramCache]: Analyzing trace with hash 837675906, now seen corresponding path program 1 times [2018-09-10 12:32:09,665 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:09,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:09,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:09,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:09,666 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 393 proven. 50 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-09-10 12:32:10,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:10,068 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 12:32:10,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:10,077 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:10,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-09-10 12:32:11,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:12,146 WARN L175 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-10 12:32:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 291 proven. 183 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-09-10 12:32:12,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:12,549 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 12:32:12,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:12,566 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:12,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-09-10 12:32:13,204 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:13,425 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-09-10 12:32:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 221 proven. 317 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-09-10 12:32:14,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:32:14,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-09-10 12:32:14,066 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:32:14,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 12:32:14,068 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 12:32:14,068 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-09-10 12:32:14,068 INFO L87 Difference]: Start difference. First operand 135155 states and 162546 transitions. Second operand 10 states. Received shutdown request... [2018-09-10 12:32:16,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:32:16,092 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:32:16,097 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:32:16,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:32:16 BoogieIcfgContainer [2018-09-10 12:32:16,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:32:16,098 INFO L168 Benchmark]: Toolchain (without parser) took 236845.31 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-10 12:32:16,099 INFO L168 Benchmark]: CDTParser took 0.20 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 12:32:16,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1944.62 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 12:32:16,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.87 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 12:32:16,101 INFO L168 Benchmark]: Boogie Preprocessor took 898.60 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 936.4 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 123.5 MB. Max. memory is 7.1 GB. [2018-09-10 12:32:16,102 INFO L168 Benchmark]: RCFGBuilder took 10589.45 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: 499.5 MB). Peak memory consumption was 499.5 MB. Max. memory is 7.1 GB. [2018-09-10 12:32:16,103 INFO L168 Benchmark]: TraceAbstraction took 223127.17 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.2 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -341.1 MB). Peak memory consumption was 809.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:32:16,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1944.62 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 278.87 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 898.60 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 936.4 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 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10589.45 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: 499.5 MB). Peak memory consumption was 499.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223127.17 ms. Allocated memory was 2.5 GB in the beginning and 3.6 GB in the end (delta: 1.2 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -341.1 MB). Peak memory consumption was 809.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 164). Cancelled while BasicCegarLoop was constructing difference of abstraction (135155states) and FLOYD_HOARE automaton (currently 10 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (701 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 223.0s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 185.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3353 SDtfs, 26966 SDslu, 3544 SDs, 0 SdLazy, 47232 SolverSat, 10370 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 139.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4384 GetRequests, 4154 SyntacticMatches, 10 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 10231 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135155occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 5948 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 21.5s InterpolantComputationTime, 4281 NumberOfCodeBlocks, 4281 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6343 ConstructedInterpolants, 191 QuantifiedInterpolants, 9024230 SizeOfPredicates, 21 NumberOfNonLiveVariables, 3437 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 5404/6734 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_label38_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-32-16-123.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label38_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-32-16-123.csv Completed graceful shutdown