java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label49_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:35:06,176 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:35:06,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:35:06,193 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:35:06,194 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:35:06,195 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:35:06,196 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:35:06,198 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:35:06,200 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:35:06,201 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:35:06,202 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:35:06,202 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:35:06,203 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:35:06,204 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:35:06,205 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:35:06,206 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:35:06,207 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:35:06,209 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:35:06,211 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:35:06,212 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:35:06,214 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:35:06,215 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:35:06,217 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:35:06,218 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:35:06,218 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:35:06,219 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:35:06,220 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:35:06,220 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:35:06,221 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:35:06,222 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:35:06,223 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:35:06,223 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:35:06,223 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:35:06,224 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:35:06,225 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:35:06,225 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:35:06,226 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:35:06,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:35:06,252 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:35:06,254 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:35:06,254 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:35:06,254 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:35:06,254 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:35:06,254 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:35:06,255 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:35:06,255 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:35:06,255 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:35:06,255 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:35:06,256 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:35:06,257 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:35:06,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:35:06,257 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:35:06,258 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:35:06,259 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:35:06,259 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:35:06,259 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:35:06,259 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:35:06,259 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:35:06,260 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:35:06,260 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:35:06,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:35:06,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:35:06,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:35:06,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:35:06,261 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:35:06,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:35:06,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:35:06,262 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:35:06,262 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:35:06,262 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:35:06,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:35:06,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:35:06,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:35:06,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:35:06,357 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:35:06,357 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label49_false-unreach-call.c [2018-07-24 12:35:06,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefc0dfd7/575b5cf9afc54290a54ef6f9fe5562f1/FLAGd370bf1bf [2018-07-24 12:35:07,214 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:35:07,215 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label49_false-unreach-call.c [2018-07-24 12:35:07,243 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefc0dfd7/575b5cf9afc54290a54ef6f9fe5562f1/FLAGd370bf1bf [2018-07-24 12:35:07,260 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aefc0dfd7/575b5cf9afc54290a54ef6f9fe5562f1 [2018-07-24 12:35:07,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:35:07,275 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:35:07,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:35:07,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:35:07,284 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:35:07,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:35:07" (1/1) ... [2018-07-24 12:35:07,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47db165b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:07, skipping insertion in model container [2018-07-24 12:35:07,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:35:07" (1/1) ... [2018-07-24 12:35:07,585 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:35:08,399 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:35:08,418 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:35:08,955 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:35:09,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09 WrapperNode [2018-07-24 12:35:09,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:35:09,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:35:09,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:35:09,139 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:35:09,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:09,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:09,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:35:09,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:35:09,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:35:09,360 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:35:09,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:09,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:09,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:09,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:09,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:09,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:10,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... [2018-07-24 12:35:10,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:35:10,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:35:10,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:35:10,076 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:35:10,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:35:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:35:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:35:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:35:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:35:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:35:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:35:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:35:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:35:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:35:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:35:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:35:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:35:18,163 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:35:18,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:35:18 BoogieIcfgContainer [2018-07-24 12:35:18,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:35:18,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:35:18,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:35:18,169 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:35:18,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:35:07" (1/3) ... [2018-07-24 12:35:18,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b8ac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:35:18, skipping insertion in model container [2018-07-24 12:35:18,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:35:09" (2/3) ... [2018-07-24 12:35:18,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b8ac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:35:18, skipping insertion in model container [2018-07-24 12:35:18,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:35:18" (3/3) ... [2018-07-24 12:35:18,173 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label49_false-unreach-call.c [2018-07-24 12:35:18,182 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:35:18,191 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:35:18,251 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:35:18,252 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:35:18,252 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:35:18,252 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:35:18,252 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:35:18,253 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:35:18,253 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:35:18,253 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:35:18,253 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:35:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 12:35:18,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-24 12:35:18,299 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:18,300 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:18,301 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:18,306 INFO L82 PathProgramCache]: Analyzing trace with hash 861366167, now seen corresponding path program 1 times [2018-07-24 12:35:18,309 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:18,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:18,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:18,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:18,363 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:18,733 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:35:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:35:18,760 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:35:18,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:35:18,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:18,766 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:35:18,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:35:18,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:35:18,784 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 12:35:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:24,919 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 12:35:24,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:35:24,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-07-24 12:35:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:24,974 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 12:35:24,975 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 12:35:24,990 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:35:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 12:35:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 12:35:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 12:35:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-07-24 12:35:25,170 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 29 [2018-07-24 12:35:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:25,171 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-07-24 12:35:25,171 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:35:25,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-07-24 12:35:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-24 12:35:25,177 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:25,178 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:25,178 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:25,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1271748152, now seen corresponding path program 1 times [2018-07-24 12:35:25,179 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:25,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:25,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:25,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:25,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:35:25,492 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:35:25,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:35:25,493 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:25,495 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:35:25,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:35:25,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:35:25,495 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-07-24 12:35:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:33,624 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-07-24 12:35:33,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:35:33,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-07-24 12:35:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:33,646 INFO L225 Difference]: With dead ends: 4419 [2018-07-24 12:35:33,647 INFO L226 Difference]: Without dead ends: 2951 [2018-07-24 12:35:33,652 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:35:33,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-07-24 12:35:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-07-24 12:35:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-07-24 12:35:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-07-24 12:35:33,743 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 99 [2018-07-24 12:35:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:33,744 INFO L471 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-07-24 12:35:33,744 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:35:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-07-24 12:35:33,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-24 12:35:33,751 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:33,751 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:33,751 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:33,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1983912533, now seen corresponding path program 1 times [2018-07-24 12:35:33,752 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:33,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:33,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:33,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:33,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:35:33,951 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:35:33,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:35:33,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:33,952 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:35:33,952 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:35:33,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:35:33,954 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-07-24 12:35:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:39,554 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-07-24 12:35:39,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:35:39,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-07-24 12:35:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:39,578 INFO L225 Difference]: With dead ends: 7345 [2018-07-24 12:35:39,578 INFO L226 Difference]: Without dead ends: 4426 [2018-07-24 12:35:39,587 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:35:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-07-24 12:35:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-07-24 12:35:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-07-24 12:35:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-07-24 12:35:39,720 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 100 [2018-07-24 12:35:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:39,721 INFO L471 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-07-24 12:35:39,721 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:35:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-07-24 12:35:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-24 12:35:39,726 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:39,727 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:39,727 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash -132063175, now seen corresponding path program 1 times [2018-07-24 12:35:39,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:39,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:39,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:39,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:39,731 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:40,019 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:35:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:35:40,156 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:35:40,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:35:40,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:40,157 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:35:40,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:35:40,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:35:40,157 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 6 states. [2018-07-24 12:35:46,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:46,353 INFO L93 Difference]: Finished difference Result 11801 states and 17592 transitions. [2018-07-24 12:35:46,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:35:46,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-07-24 12:35:46,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:46,386 INFO L225 Difference]: With dead ends: 11801 [2018-07-24 12:35:46,387 INFO L226 Difference]: Without dead ends: 7416 [2018-07-24 12:35:46,399 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:35:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7416 states. [2018-07-24 12:35:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7416 to 7323. [2018-07-24 12:35:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7323 states. [2018-07-24 12:35:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7323 states to 7323 states and 10451 transitions. [2018-07-24 12:35:46,559 INFO L78 Accepts]: Start accepts. Automaton has 7323 states and 10451 transitions. Word has length 102 [2018-07-24 12:35:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:46,560 INFO L471 AbstractCegarLoop]: Abstraction has 7323 states and 10451 transitions. [2018-07-24 12:35:46,560 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:35:46,560 INFO L276 IsEmpty]: Start isEmpty. Operand 7323 states and 10451 transitions. [2018-07-24 12:35:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-24 12:35:46,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:46,562 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:46,562 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2139325120, now seen corresponding path program 1 times [2018-07-24 12:35:46,563 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:46,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:46,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:46,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:46,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:35:46,709 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:35:46,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:35:46,710 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:46,710 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:35:46,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:35:46,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:35:46,711 INFO L87 Difference]: Start difference. First operand 7323 states and 10451 transitions. Second operand 4 states. [2018-07-24 12:35:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:54,325 INFO L93 Difference]: Finished difference Result 23228 states and 33575 transitions. [2018-07-24 12:35:54,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:35:54,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-07-24 12:35:54,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:54,421 INFO L225 Difference]: With dead ends: 23228 [2018-07-24 12:35:54,421 INFO L226 Difference]: Without dead ends: 15911 [2018-07-24 12:35:54,464 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:35:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15911 states. [2018-07-24 12:35:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15911 to 15911. [2018-07-24 12:35:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15911 states. [2018-07-24 12:35:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15911 states to 15911 states and 21022 transitions. [2018-07-24 12:35:55,082 INFO L78 Accepts]: Start accepts. Automaton has 15911 states and 21022 transitions. Word has length 127 [2018-07-24 12:35:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:55,082 INFO L471 AbstractCegarLoop]: Abstraction has 15911 states and 21022 transitions. [2018-07-24 12:35:55,083 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:35:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 15911 states and 21022 transitions. [2018-07-24 12:35:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-24 12:35:55,104 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:55,105 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:55,105 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:55,105 INFO L82 PathProgramCache]: Analyzing trace with hash -252704693, now seen corresponding path program 1 times [2018-07-24 12:35:55,106 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:55,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:55,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:55,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:55,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 66 proven. 153 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 12:35:55,366 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:55,366 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:55,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:55,375 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:55,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-07-24 12:35:55,802 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 66 proven. 153 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 12:35:56,180 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:35:56,181 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 12:35:56,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:56,182 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:35:56,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:35:56,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:35:56,185 INFO L87 Difference]: Start difference. First operand 15911 states and 21022 transitions. Second operand 5 states. [2018-07-24 12:36:05,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:05,448 INFO L93 Difference]: Finished difference Result 47455 states and 63932 transitions. [2018-07-24 12:36:05,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:36:05,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2018-07-24 12:36:05,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:05,606 INFO L225 Difference]: With dead ends: 47455 [2018-07-24 12:36:05,606 INFO L226 Difference]: Without dead ends: 31550 [2018-07-24 12:36:05,704 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 658 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:36:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31550 states. [2018-07-24 12:36:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31550 to 31391. [2018-07-24 12:36:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31391 states. [2018-07-24 12:36:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31391 states to 31391 states and 39415 transitions. [2018-07-24 12:36:06,509 INFO L78 Accepts]: Start accepts. Automaton has 31391 states and 39415 transitions. Word has length 330 [2018-07-24 12:36:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:06,509 INFO L471 AbstractCegarLoop]: Abstraction has 31391 states and 39415 transitions. [2018-07-24 12:36:06,510 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:36:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 31391 states and 39415 transitions. [2018-07-24 12:36:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-24 12:36:06,562 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:06,563 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:06,563 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1587423680, now seen corresponding path program 1 times [2018-07-24 12:36:06,563 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:06,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:06,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:06,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:06,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 168 proven. 98 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:36:07,223 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:07,223 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:36:07,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:07,240 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:07,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 12:36:07,873 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 168 proven. 98 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:36:09,021 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:09,022 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:36:09,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:09,053 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:09,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 12:36:09,793 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:09,985 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:36:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 168 proven. 98 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:36:10,544 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:36:10,545 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 12:36:10,545 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:36:10,546 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:36:10,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:36:10,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:36:10,547 INFO L87 Difference]: Start difference. First operand 31391 states and 39415 transitions. Second operand 9 states. [2018-07-24 12:36:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:23,427 INFO L93 Difference]: Finished difference Result 75745 states and 100363 transitions. [2018-07-24 12:36:23,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:36:23,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 373 [2018-07-24 12:36:23,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:23,642 INFO L225 Difference]: With dead ends: 75745 [2018-07-24 12:36:23,642 INFO L226 Difference]: Without dead ends: 44360 [2018-07-24 12:36:23,817 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1514 GetRequests, 1493 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:36:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44360 states. [2018-07-24 12:36:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44360 to 44179. [2018-07-24 12:36:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44179 states. [2018-07-24 12:36:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44179 states to 44179 states and 56369 transitions. [2018-07-24 12:36:24,741 INFO L78 Accepts]: Start accepts. Automaton has 44179 states and 56369 transitions. Word has length 373 [2018-07-24 12:36:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:24,742 INFO L471 AbstractCegarLoop]: Abstraction has 44179 states and 56369 transitions. [2018-07-24 12:36:24,742 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:36:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 44179 states and 56369 transitions. [2018-07-24 12:36:24,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-07-24 12:36:24,799 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:24,799 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:24,799 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash -835723922, now seen corresponding path program 1 times [2018-07-24 12:36:24,800 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:24,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:24,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:24,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:24,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:25,308 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 12:36:25,623 WARN L169 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:36:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 221 proven. 263 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-07-24 12:36:26,326 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:26,326 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:36:26,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:26,335 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:26,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 759 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-07-24 12:36:27,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 313 proven. 159 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2018-07-24 12:36:27,483 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:27,483 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:36:27,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:27,500 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:27,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 759 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-07-24 12:36:28,101 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 313 proven. 159 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2018-07-24 12:36:28,562 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:36:28,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 24 [2018-07-24 12:36:28,563 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:36:28,564 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:36:28,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:36:28,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:36:28,565 INFO L87 Difference]: Start difference. First operand 44179 states and 56369 transitions. Second operand 15 states. [2018-07-24 12:36:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:55,019 INFO L93 Difference]: Finished difference Result 104701 states and 136570 transitions. [2018-07-24 12:36:55,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 12:36:55,020 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 535 [2018-07-24 12:36:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:55,289 INFO L225 Difference]: With dead ends: 104701 [2018-07-24 12:36:55,289 INFO L226 Difference]: Without dead ends: 54296 [2018-07-24 12:36:55,554 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2209 GetRequests, 2150 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=621, Invalid=3039, Unknown=0, NotChecked=0, Total=3660 [2018-07-24 12:36:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54296 states. [2018-07-24 12:36:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54296 to 50576. [2018-07-24 12:36:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50576 states. [2018-07-24 12:36:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50576 states to 50576 states and 58344 transitions. [2018-07-24 12:36:56,694 INFO L78 Accepts]: Start accepts. Automaton has 50576 states and 58344 transitions. Word has length 535 [2018-07-24 12:36:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:56,694 INFO L471 AbstractCegarLoop]: Abstraction has 50576 states and 58344 transitions. [2018-07-24 12:36:56,694 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 12:36:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 50576 states and 58344 transitions. [2018-07-24 12:36:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2018-07-24 12:36:56,801 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:56,802 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:56,802 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1212294575, now seen corresponding path program 1 times [2018-07-24 12:36:56,803 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:56,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:56,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:56,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:56,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 518 proven. 1070 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-07-24 12:36:58,762 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:58,762 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:36:58,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:58,769 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:58,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2018-07-24 12:36:59,304 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2018-07-24 12:36:59,776 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:36:59,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [21] total 23 [2018-07-24 12:36:59,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:36:59,778 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:36:59,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:36:59,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:36:59,779 INFO L87 Difference]: Start difference. First operand 50576 states and 58344 transitions. Second operand 3 states. [2018-07-24 12:37:04,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:04,122 INFO L93 Difference]: Finished difference Result 119698 states and 139877 transitions. [2018-07-24 12:37:04,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:37:04,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 726 [2018-07-24 12:37:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:04,399 INFO L225 Difference]: With dead ends: 119698 [2018-07-24 12:37:04,400 INFO L226 Difference]: Without dead ends: 69133 [2018-07-24 12:37:04,603 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1474 GetRequests, 1452 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:37:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69133 states. [2018-07-24 12:37:05,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69133 to 67000. [2018-07-24 12:37:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67000 states. [2018-07-24 12:37:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67000 states to 67000 states and 76246 transitions. [2018-07-24 12:37:05,854 INFO L78 Accepts]: Start accepts. Automaton has 67000 states and 76246 transitions. Word has length 726 [2018-07-24 12:37:05,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:05,856 INFO L471 AbstractCegarLoop]: Abstraction has 67000 states and 76246 transitions. [2018-07-24 12:37:05,856 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:37:05,856 INFO L276 IsEmpty]: Start isEmpty. Operand 67000 states and 76246 transitions. [2018-07-24 12:37:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2018-07-24 12:37:05,956 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:05,957 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:37:05,957 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:05,957 INFO L82 PathProgramCache]: Analyzing trace with hash 189214881, now seen corresponding path program 1 times [2018-07-24 12:37:05,958 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:05,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:05,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:05,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:05,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:37:08,244 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:08,244 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:37:08,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:08,253 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:08,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:09,277 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-07-24 12:37:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:37:10,609 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:37:12,483 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:12,483 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:37:12,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:12,510 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:13,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:13,457 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:37:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:37:13,773 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:37:15,777 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:37:15,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6, 5, 5] total 19 [2018-07-24 12:37:15,778 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:37:15,780 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 12:37:15,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 12:37:15,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-07-24 12:37:15,780 INFO L87 Difference]: Start difference. First operand 67000 states and 76246 transitions. Second operand 13 states. [2018-07-24 12:37:18,102 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-07-24 12:37:19,083 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-07-24 12:37:22,128 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2018-07-24 12:37:23,413 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2018-07-24 12:37:24,845 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-07-24 12:37:25,197 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-07-24 12:37:26,468 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2018-07-24 12:37:27,210 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2018-07-24 12:37:27,686 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-07-24 12:37:36,641 WARN L169 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-07-24 12:37:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:42,365 INFO L93 Difference]: Finished difference Result 189796 states and 235140 transitions. [2018-07-24 12:37:42,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-07-24 12:37:42,366 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 819 [2018-07-24 12:37:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:43,202 INFO L225 Difference]: With dead ends: 189796 [2018-07-24 12:37:43,202 INFO L226 Difference]: Without dead ends: 122807 [2018-07-24 12:37:43,632 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3398 GetRequests, 3317 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1258, Invalid=5384, Unknown=0, NotChecked=0, Total=6642 [2018-07-24 12:37:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122807 states. [2018-07-24 12:37:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122807 to 118630. [2018-07-24 12:37:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118630 states. [2018-07-24 12:37:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118630 states to 118630 states and 133424 transitions. [2018-07-24 12:37:47,148 INFO L78 Accepts]: Start accepts. Automaton has 118630 states and 133424 transitions. Word has length 819 [2018-07-24 12:37:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:47,149 INFO L471 AbstractCegarLoop]: Abstraction has 118630 states and 133424 transitions. [2018-07-24 12:37:47,149 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 12:37:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 118630 states and 133424 transitions. [2018-07-24 12:37:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2018-07-24 12:37:47,328 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:47,329 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:37:47,329 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1601261966, now seen corresponding path program 1 times [2018-07-24 12:37:47,330 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:47,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:47,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:47,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:47,331 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 244 proven. 460 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 12:37:48,409 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:48,409 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:37:48,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:48,417 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:48,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 12:37:49,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 12:37:50,536 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:50,537 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:37:50,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:50,552 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:51,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 12:37:51,699 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 12:37:52,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:37:52,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 16 [2018-07-24 12:37:52,446 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:37:52,450 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:37:52,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:37:52,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:37:52,451 INFO L87 Difference]: Start difference. First operand 118630 states and 133424 transitions. Second operand 15 states. [2018-07-24 12:38:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:16,426 INFO L93 Difference]: Finished difference Result 234992 states and 265603 transitions. [2018-07-24 12:38:16,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-07-24 12:38:16,427 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 835 [2018-07-24 12:38:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:16,789 INFO L225 Difference]: With dead ends: 234992 [2018-07-24 12:38:16,789 INFO L226 Difference]: Without dead ends: 99805 [2018-07-24 12:38:17,174 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3452 GetRequests, 3376 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=870, Invalid=3686, Unknown=0, NotChecked=0, Total=4556 [2018-07-24 12:38:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99805 states. [2018-07-24 12:38:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99805 to 94044. [2018-07-24 12:38:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94044 states. [2018-07-24 12:38:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94044 states to 94044 states and 103430 transitions. [2018-07-24 12:38:18,902 INFO L78 Accepts]: Start accepts. Automaton has 94044 states and 103430 transitions. Word has length 835 [2018-07-24 12:38:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:18,903 INFO L471 AbstractCegarLoop]: Abstraction has 94044 states and 103430 transitions. [2018-07-24 12:38:18,904 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 12:38:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand 94044 states and 103430 transitions. [2018-07-24 12:38:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2018-07-24 12:38:18,996 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:18,996 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:38:18,997 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:18,997 INFO L82 PathProgramCache]: Analyzing trace with hash 707000712, now seen corresponding path program 1 times [2018-07-24 12:38:18,997 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:18,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:18,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:18,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:18,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 585 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:38:19,900 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:19,900 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:19,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:19,908 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:20,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 585 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:38:21,235 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 585 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:38:21,909 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:21,909 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:38:21,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:21,926 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:22,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 585 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:38:23,174 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 585 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-07-24 12:38:23,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:38:23,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:38:23,834 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:38:23,835 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:38:23,836 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:38:23,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:38:23,836 INFO L87 Difference]: Start difference. First operand 94044 states and 103430 transitions. Second operand 9 states. [2018-07-24 12:38:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:34,304 INFO L93 Difference]: Finished difference Result 178358 states and 194181 transitions. [2018-07-24 12:38:34,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:38:34,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 868 [2018-07-24 12:38:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:34,479 INFO L225 Difference]: With dead ends: 178358 [2018-07-24 12:38:34,480 INFO L226 Difference]: Without dead ends: 67525 [2018-07-24 12:38:34,664 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3490 GetRequests, 3471 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:38:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67525 states. [2018-07-24 12:38:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67525 to 64425. [2018-07-24 12:38:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64425 states. [2018-07-24 12:38:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64425 states to 64425 states and 67872 transitions. [2018-07-24 12:38:35,856 INFO L78 Accepts]: Start accepts. Automaton has 64425 states and 67872 transitions. Word has length 868 [2018-07-24 12:38:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:35,857 INFO L471 AbstractCegarLoop]: Abstraction has 64425 states and 67872 transitions. [2018-07-24 12:38:35,857 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:38:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 64425 states and 67872 transitions. [2018-07-24 12:38:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2018-07-24 12:38:35,898 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:35,899 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:38:35,899 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:35,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1974001633, now seen corresponding path program 1 times [2018-07-24 12:38:35,900 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:35,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:35,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:35,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:35,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 570 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-07-24 12:38:36,836 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:36,836 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:36,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:36,844 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:37,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 570 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-07-24 12:38:38,041 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 570 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-07-24 12:38:38,854 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:38,855 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:38:38,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:38,874 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:39,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 570 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-07-24 12:38:40,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 570 proven. 2 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-07-24 12:38:40,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:38:40,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-07-24 12:38:40,830 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:38:40,832 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:38:40,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:38:40,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:38:40,833 INFO L87 Difference]: Start difference. First operand 64425 states and 67872 transitions. Second operand 6 states. [2018-07-24 12:38:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:48,515 INFO L93 Difference]: Finished difference Result 148021 states and 157336 transitions. [2018-07-24 12:38:48,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 12:38:48,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 950 [2018-07-24 12:38:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:48,673 INFO L225 Difference]: With dead ends: 148021 [2018-07-24 12:38:48,673 INFO L226 Difference]: Without dead ends: 83607 [2018-07-24 12:38:48,751 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3815 GetRequests, 3796 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:38:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83607 states. [2018-07-24 12:38:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83607 to 80711. [2018-07-24 12:38:49,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80711 states. [2018-07-24 12:38:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80711 states to 80711 states and 85785 transitions. [2018-07-24 12:38:49,980 INFO L78 Accepts]: Start accepts. Automaton has 80711 states and 85785 transitions. Word has length 950 [2018-07-24 12:38:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:49,981 INFO L471 AbstractCegarLoop]: Abstraction has 80711 states and 85785 transitions. [2018-07-24 12:38:49,981 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:38:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 80711 states and 85785 transitions. [2018-07-24 12:38:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2018-07-24 12:38:50,053 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:50,053 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:38:50,053 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:50,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1074553830, now seen corresponding path program 1 times [2018-07-24 12:38:50,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:50,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:50,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:50,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:50,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:51,141 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 12:38:51,562 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-24 12:38:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 429 proven. 345 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2018-07-24 12:38:53,164 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:53,164 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:53,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:53,173 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:53,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2018-07-24 12:38:53,849 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-07-24 12:38:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2018-07-24 12:38:56,059 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:38:56,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2018-07-24 12:38:56,060 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:56,062 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:38:56,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:38:56,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:38:56,063 INFO L87 Difference]: Start difference. First operand 80711 states and 85785 transitions. Second operand 3 states. [2018-07-24 12:38:56,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 12:38:56,064 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:38:56,070 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:38:56,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:38:56 BoogieIcfgContainer [2018-07-24 12:38:56,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:38:56,071 INFO L168 Benchmark]: Toolchain (without parser) took 228797.23 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 12:38:56,073 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:38:56,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1860.81 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: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:38:56,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.60 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:38:56,074 INFO L168 Benchmark]: Boogie Preprocessor took 715.99 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:38:56,075 INFO L168 Benchmark]: RCFGBuilder took 8088.74 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 552.1 MB). Peak memory consumption was 552.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:38:56,076 INFO L168 Benchmark]: TraceAbstraction took 217905.15 ms. Allocated memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 589.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:38:56,082 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 1860.81 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: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.60 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 715.99 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8088.74 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 552.1 MB). Peak memory consumption was 552.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217905.15 ms. Allocated memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 589.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (80711states) and interpolant automaton (currently 2 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 217.8s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 159.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2094 SDtfs, 59677 SDslu, 3626 SDs, 0 SdLazy, 102761 SolverSat, 17251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 114.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22167 GetRequests, 21820 SyntacticMatches, 36 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4685 ImplicationChecksByTransitivity, 16.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118630occurred in iteration=10, 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: 12.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 22281 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 32.0s InterpolantComputationTime, 17805 NumberOfCodeBlocks, 17805 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 28625 ConstructedInterpolants, 0 QuantifiedInterpolants, 84055264 SizeOfPredicates, 14 NumberOfNonLiveVariables, 15126 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 44 InterpolantComputations, 10 PerfectInterpolantSequences, 29846/32948 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/Problem18_label49_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-38-56-106.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label49_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-38-56-106.csv Completed graceful shutdown