java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:43:54,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:43:54,171 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:43:54,185 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:43:54,186 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:43:54,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:43:54,188 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:43:54,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:43:54,194 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:43:54,194 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:43:54,195 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:43:54,195 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:43:54,196 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:43:54,197 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:43:54,198 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:43:54,199 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:43:54,200 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:43:54,202 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:43:54,204 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:43:54,206 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:43:54,207 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:43:54,208 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:43:54,211 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:43:54,211 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:43:54,211 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:43:54,212 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:43:54,213 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:43:54,214 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:43:54,215 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:43:54,216 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:43:54,216 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:43:54,217 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:43:54,217 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:43:54,218 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:43:54,219 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:43:54,219 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:43:54,220 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:43:54,236 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:43:54,237 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:43:54,237 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:43:54,238 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:43:54,238 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:43:54,238 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:43:54,238 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:43:54,239 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:43:54,239 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:43:54,239 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:43:54,239 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:43:54,240 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:43:54,240 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:43:54,240 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:43:54,240 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:43:54,240 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:43:54,241 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:43:54,241 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:43:54,241 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:43:54,241 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:43:54,241 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:43:54,242 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:43:54,242 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:43:54,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:43:54,242 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:43:54,242 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:43:54,243 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:43:54,243 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:43:54,243 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:43:54,243 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:43:54,243 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:43:54,243 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:43:54,244 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:43:54,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:43:54,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:43:54,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:43:54,319 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:43:54,320 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:43:54,321 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-09-10 11:43:54,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6ef9125/cd2b1b88755a415985dfdf9a7b5fe4a8/FLAGa0b9d47bc [2018-09-10 11:43:55,118 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:43:55,119 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-09-10 11:43:55,178 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6ef9125/cd2b1b88755a415985dfdf9a7b5fe4a8/FLAGa0b9d47bc [2018-09-10 11:43:55,203 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6ef9125/cd2b1b88755a415985dfdf9a7b5fe4a8 [2018-09-10 11:43:55,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:43:55,222 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:43:55,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:43:55,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:43:55,235 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:43:55,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:43:55" (1/1) ... [2018-09-10 11:43:55,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d96ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:55, skipping insertion in model container [2018-09-10 11:43:55,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:43:55" (1/1) ... [2018-09-10 11:43:55,615 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:43:56,605 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:43:56,625 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:43:57,655 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:43:57,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57 WrapperNode [2018-09-10 11:43:57,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:43:57,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:43:57,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:43:57,912 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:43:57,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:58,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:58,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:43:58,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:43:58,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:43:58,156 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:43:58,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:58,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:58,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:58,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:58,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:58,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:59,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... [2018-09-10 11:43:59,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:43:59,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:43:59,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:43:59,139 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:43:59,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:43:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:43:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:43:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:43:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:43:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:43:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:43:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:43:59,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:43:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:43:59,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:43:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:43:59,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:43:59,223 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:43:59,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:44:13,131 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:44:13,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:44:13 BoogieIcfgContainer [2018-09-10 11:44:13,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:44:13,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:44:13,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:44:13,136 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:44:13,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:43:55" (1/3) ... [2018-09-10 11:44:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ceba4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:44:13, skipping insertion in model container [2018-09-10 11:44:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:43:57" (2/3) ... [2018-09-10 11:44:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ceba4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:44:13, skipping insertion in model container [2018-09-10 11:44:13,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:44:13" (3/3) ... [2018-09-10 11:44:13,139 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label22_true-unreach-call.c [2018-09-10 11:44:13,149 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:44:13,160 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:44:13,229 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:44:13,230 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:44:13,230 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:44:13,230 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:44:13,230 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:44:13,230 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:44:13,231 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:44:13,231 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:44:13,231 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:44:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:44:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-10 11:44:13,290 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:13,291 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:13,292 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:13,298 INFO L82 PathProgramCache]: Analyzing trace with hash -743081679, now seen corresponding path program 1 times [2018-09-10 11:44:13,301 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:13,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:13,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:13,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:13,354 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:13,843 WARN L175 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:44:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:13,973 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:13,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:44:13,974 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:13,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:44:13,995 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:44:13,996 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:44:13,998 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:44:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:24,110 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:44:24,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:44:24,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-09-10 11:44:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:24,164 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:44:24,164 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:44:24,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:44:24,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:44:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:44:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:44:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-10 11:44:24,378 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 71 [2018-09-10 11:44:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:24,379 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-10 11:44:24,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:44:24,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-10 11:44:24,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-10 11:44:24,392 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:24,393 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:24,393 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:24,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1698738186, now seen corresponding path program 1 times [2018-09-10 11:44:24,394 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:24,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:24,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:24,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:24,396 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:24,778 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:24,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:44:24,779 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:24,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:44:24,781 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:44:24,782 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:24,782 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-09-10 11:44:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:39,722 INFO L93 Difference]: Finished difference Result 4793 states and 8578 transitions. [2018-09-10 11:44:39,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:44:39,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-09-10 11:44:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:39,744 INFO L225 Difference]: With dead ends: 4793 [2018-09-10 11:44:39,744 INFO L226 Difference]: Without dead ends: 3195 [2018-09-10 11:44:39,751 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:44:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-09-10 11:44:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3170. [2018-09-10 11:44:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3170 states. [2018-09-10 11:44:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4855 transitions. [2018-09-10 11:44:39,851 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4855 transitions. Word has length 145 [2018-09-10 11:44:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:39,852 INFO L480 AbstractCegarLoop]: Abstraction has 3170 states and 4855 transitions. [2018-09-10 11:44:39,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:44:39,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4855 transitions. [2018-09-10 11:44:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-10 11:44:39,865 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:39,865 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:39,865 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:39,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1806511885, now seen corresponding path program 1 times [2018-09-10 11:44:39,866 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:39,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:39,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:39,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:39,871 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:40,160 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:40,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:44:40,161 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:40,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:44:40,161 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:44:40,162 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:44:40,162 INFO L87 Difference]: Start difference. First operand 3170 states and 4855 transitions. Second operand 6 states. [2018-09-10 11:44:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:54,682 INFO L93 Difference]: Finished difference Result 11143 states and 17389 transitions. [2018-09-10 11:44:54,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:44:54,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-09-10 11:44:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:54,728 INFO L225 Difference]: With dead ends: 11143 [2018-09-10 11:44:54,729 INFO L226 Difference]: Without dead ends: 7979 [2018-09-10 11:44:54,745 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:44:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2018-09-10 11:44:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 7906. [2018-09-10 11:44:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7906 states. [2018-09-10 11:44:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11742 transitions. [2018-09-10 11:44:54,946 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11742 transitions. Word has length 150 [2018-09-10 11:44:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:54,947 INFO L480 AbstractCegarLoop]: Abstraction has 7906 states and 11742 transitions. [2018-09-10 11:44:54,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:44:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11742 transitions. [2018-09-10 11:44:54,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-09-10 11:44:54,952 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:54,952 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:44:54,952 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1901996262, now seen corresponding path program 1 times [2018-09-10 11:44:54,953 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:54,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:54,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:54,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:54,954 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:44:55,202 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:44:55,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:44:55,202 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:44:55,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:44:55,203 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:44:55,204 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:44:55,204 INFO L87 Difference]: Start difference. First operand 7906 states and 11742 transitions. Second operand 5 states. [2018-09-10 11:45:15,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:15,402 INFO L93 Difference]: Finished difference Result 28916 states and 43965 transitions. [2018-09-10 11:45:15,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:45:15,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2018-09-10 11:45:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:15,492 INFO L225 Difference]: With dead ends: 28916 [2018-09-10 11:45:15,493 INFO L226 Difference]: Without dead ends: 21016 [2018-09-10 11:45:15,534 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:45:15,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21016 states. [2018-09-10 11:45:16,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21016 to 20777. [2018-09-10 11:45:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20777 states. [2018-09-10 11:45:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20777 states to 20777 states and 28557 transitions. [2018-09-10 11:45:16,073 INFO L78 Accepts]: Start accepts. Automaton has 20777 states and 28557 transitions. Word has length 175 [2018-09-10 11:45:16,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:16,073 INFO L480 AbstractCegarLoop]: Abstraction has 20777 states and 28557 transitions. [2018-09-10 11:45:16,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 20777 states and 28557 transitions. [2018-09-10 11:45:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-10 11:45:16,086 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:16,086 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:45:16,087 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:16,087 INFO L82 PathProgramCache]: Analyzing trace with hash 429182868, now seen corresponding path program 1 times [2018-09-10 11:45:16,087 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:16,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:16,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:16,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:16,089 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-10 11:45:16,610 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:45:16,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:45:16,611 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:16,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:45:16,612 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:45:16,612 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:45:16,612 INFO L87 Difference]: Start difference. First operand 20777 states and 28557 transitions. Second operand 5 states. [2018-09-10 11:45:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:27,287 INFO L93 Difference]: Finished difference Result 63428 states and 91034 transitions. [2018-09-10 11:45:27,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:45:27,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-09-10 11:45:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:27,445 INFO L225 Difference]: With dead ends: 63428 [2018-09-10 11:45:27,445 INFO L226 Difference]: Without dead ends: 42657 [2018-09-10 11:45:27,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:45:27,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42657 states. [2018-09-10 11:45:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42657 to 42242. [2018-09-10 11:45:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42242 states. [2018-09-10 11:45:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42242 states to 42242 states and 56579 transitions. [2018-09-10 11:45:28,469 INFO L78 Accepts]: Start accepts. Automaton has 42242 states and 56579 transitions. Word has length 228 [2018-09-10 11:45:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:28,470 INFO L480 AbstractCegarLoop]: Abstraction has 42242 states and 56579 transitions. [2018-09-10 11:45:28,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 42242 states and 56579 transitions. [2018-09-10 11:45:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-10 11:45:28,487 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:28,487 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:45:28,488 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:28,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1178955432, now seen corresponding path program 1 times [2018-09-10 11:45:28,488 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:28,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:28,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:28,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:28,490 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:28,756 WARN L175 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:45:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 128 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:29,195 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:29,196 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:45:29,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:29,212 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:29,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-10 11:45:29,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 128 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:45:30,471 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:45:30,472 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:45:30,472 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:45:30,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:45:30,473 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:45:30,473 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:45:30,473 INFO L87 Difference]: Start difference. First operand 42242 states and 56579 transitions. Second operand 5 states. [2018-09-10 11:45:44,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:45:44,945 INFO L93 Difference]: Finished difference Result 109842 states and 156335 transitions. [2018-09-10 11:45:44,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:45:44,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2018-09-10 11:45:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:45:45,316 INFO L225 Difference]: With dead ends: 109842 [2018-09-10 11:45:45,317 INFO L226 Difference]: Without dead ends: 67606 [2018-09-10 11:45:45,496 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 526 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:45:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67606 states. [2018-09-10 11:45:47,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67606 to 67224. [2018-09-10 11:45:47,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67224 states. [2018-09-10 11:45:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67224 states to 67224 states and 92166 transitions. [2018-09-10 11:45:47,862 INFO L78 Accepts]: Start accepts. Automaton has 67224 states and 92166 transitions. Word has length 266 [2018-09-10 11:45:47,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:47,862 INFO L480 AbstractCegarLoop]: Abstraction has 67224 states and 92166 transitions. [2018-09-10 11:45:47,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:45:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 67224 states and 92166 transitions. [2018-09-10 11:45:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-09-10 11:45:47,878 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:47,878 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:45:47,878 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:47,879 INFO L82 PathProgramCache]: Analyzing trace with hash 21705772, now seen corresponding path program 1 times [2018-09-10 11:45:47,879 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:47,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:47,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:47,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:47,880 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:48,514 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:48,514 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:45:48,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:48,533 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:48,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:49,068 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:49,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:49,368 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:45:49,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:49,388 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:49,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:49,780 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:45:50,427 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:45:50,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:45:50,428 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:45:50,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:45:50,429 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:45:50,429 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:45:50,430 INFO L87 Difference]: Start difference. First operand 67224 states and 92166 transitions. Second operand 9 states. [2018-09-10 11:46:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:13,206 INFO L93 Difference]: Finished difference Result 237847 states and 437482 transitions. [2018-09-10 11:46:13,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 11:46:13,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 272 [2018-09-10 11:46:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:14,070 INFO L225 Difference]: With dead ends: 237847 [2018-09-10 11:46:14,071 INFO L226 Difference]: Without dead ends: 140232 [2018-09-10 11:46:14,497 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 1088 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:46:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140232 states. [2018-09-10 11:46:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140232 to 135247. [2018-09-10 11:46:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135247 states. [2018-09-10 11:46:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135247 states to 135247 states and 193381 transitions. [2018-09-10 11:46:19,030 INFO L78 Accepts]: Start accepts. Automaton has 135247 states and 193381 transitions. Word has length 272 [2018-09-10 11:46:19,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:19,031 INFO L480 AbstractCegarLoop]: Abstraction has 135247 states and 193381 transitions. [2018-09-10 11:46:19,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:46:19,031 INFO L276 IsEmpty]: Start isEmpty. Operand 135247 states and 193381 transitions. [2018-09-10 11:46:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-10 11:46:19,079 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:19,080 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:46:19,080 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:19,080 INFO L82 PathProgramCache]: Analyzing trace with hash 451280495, now seen corresponding path program 1 times [2018-09-10 11:46:19,080 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:19,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:19,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:19,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:19,082 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 11:46:19,418 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:46:19,418 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:46:19,419 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:19,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:46:19,419 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:46:19,419 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:46:19,420 INFO L87 Difference]: Start difference. First operand 135247 states and 193381 transitions. Second operand 4 states. [2018-09-10 11:46:32,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:32,772 INFO L93 Difference]: Finished difference Result 277065 states and 411844 transitions. [2018-09-10 11:46:32,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:46:32,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2018-09-10 11:46:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:33,479 INFO L225 Difference]: With dead ends: 277065 [2018-09-10 11:46:33,480 INFO L226 Difference]: Without dead ends: 164826 [2018-09-10 11:46:33,815 INFO L604 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 [2018-09-10 11:46:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164826 states. [2018-09-10 11:46:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164826 to 157068. [2018-09-10 11:46:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157068 states. [2018-09-10 11:46:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157068 states to 157068 states and 217391 transitions. [2018-09-10 11:46:37,795 INFO L78 Accepts]: Start accepts. Automaton has 157068 states and 217391 transitions. Word has length 337 [2018-09-10 11:46:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:37,795 INFO L480 AbstractCegarLoop]: Abstraction has 157068 states and 217391 transitions. [2018-09-10 11:46:37,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:46:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 157068 states and 217391 transitions. [2018-09-10 11:46:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-10 11:46:37,847 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:37,847 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:46:37,848 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash -848936366, now seen corresponding path program 1 times [2018-09-10 11:46:37,848 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:37,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:37,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:37,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:37,849 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:46:39,913 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:46:39,913 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:46:39,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:39,922 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:46:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:40,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:46:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-10 11:46:40,367 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:46:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:46:40,599 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:46:40,599 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:46:40,599 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:40,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:46:40,600 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:46:40,601 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:46:40,601 INFO L87 Difference]: Start difference. First operand 157068 states and 217391 transitions. Second operand 5 states. [2018-09-10 11:46:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:50,787 INFO L93 Difference]: Finished difference Result 299455 states and 437626 transitions. [2018-09-10 11:46:50,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:46:50,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 390 [2018-09-10 11:46:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:56,994 INFO L225 Difference]: With dead ends: 299455 [2018-09-10 11:46:56,994 INFO L226 Difference]: Without dead ends: 142413 [2018-09-10 11:46:57,205 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 774 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:46:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142413 states. [2018-09-10 11:46:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142413 to 140653. [2018-09-10 11:46:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140653 states. [2018-09-10 11:46:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140653 states to 140653 states and 178856 transitions. [2018-09-10 11:46:59,504 INFO L78 Accepts]: Start accepts. Automaton has 140653 states and 178856 transitions. Word has length 390 [2018-09-10 11:46:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:59,505 INFO L480 AbstractCegarLoop]: Abstraction has 140653 states and 178856 transitions. [2018-09-10 11:46:59,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:46:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 140653 states and 178856 transitions. [2018-09-10 11:46:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-09-10 11:46:59,540 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:59,540 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:46:59,541 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:46:59,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1426266600, now seen corresponding path program 1 times [2018-09-10 11:46:59,541 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:59,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:59,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:59,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:59,542 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-10 11:46:59,905 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:46:59,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:46:59,906 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:59,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:46:59,906 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:46:59,906 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:46:59,907 INFO L87 Difference]: Start difference. First operand 140653 states and 178856 transitions. Second operand 3 states. [2018-09-10 11:47:09,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:09,637 INFO L93 Difference]: Finished difference Result 302679 states and 393411 transitions. [2018-09-10 11:47:09,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:47:09,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 459 [2018-09-10 11:47:09,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:10,095 INFO L225 Difference]: With dead ends: 302679 [2018-09-10 11:47:10,096 INFO L226 Difference]: Without dead ends: 162800 [2018-09-10 11:47:10,336 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:47:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162800 states. [2018-09-10 11:47:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162800 to 158140. [2018-09-10 11:47:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158140 states. [2018-09-10 11:47:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158140 states to 158140 states and 199005 transitions. [2018-09-10 11:47:13,848 INFO L78 Accepts]: Start accepts. Automaton has 158140 states and 199005 transitions. Word has length 459 [2018-09-10 11:47:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:13,849 INFO L480 AbstractCegarLoop]: Abstraction has 158140 states and 199005 transitions. [2018-09-10 11:47:13,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:47:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 158140 states and 199005 transitions. [2018-09-10 11:47:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-09-10 11:47:13,879 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:13,880 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:47:13,880 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1813068697, now seen corresponding path program 1 times [2018-09-10 11:47:13,880 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:13,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:13,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:13,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:13,881 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:47:14,787 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:14,787 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:47:14,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:14,801 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:14,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:47:15,204 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:47:15,949 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:15,949 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:47:15,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:15,965 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:16,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:47:16,592 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:47:16,871 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:47:16,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:47:16,871 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:47:16,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:47:16,873 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:47:16,873 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:47:16,874 INFO L87 Difference]: Start difference. First operand 158140 states and 199005 transitions. Second operand 9 states. [2018-09-10 11:47:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:36,532 INFO L93 Difference]: Finished difference Result 348426 states and 480312 transitions. [2018-09-10 11:47:36,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-10 11:47:36,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2018-09-10 11:47:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:37,208 INFO L225 Difference]: With dead ends: 348426 [2018-09-10 11:47:37,208 INFO L226 Difference]: Without dead ends: 181702 [2018-09-10 11:47:37,524 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2058 GetRequests, 2036 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:47:37,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181702 states. Received shutdown request... [2018-09-10 11:47:39,652 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:47:39,657 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:47:39,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:47:39 BoogieIcfgContainer [2018-09-10 11:47:39,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:47:39,658 INFO L168 Benchmark]: Toolchain (without parser) took 224440.34 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 1.9 GB in the end (delta: -469.0 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-10 11:47:39,660 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:47:39,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2685.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:39,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 244.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:39,662 INFO L168 Benchmark]: Boogie Preprocessor took 982.28 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 909.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:39,663 INFO L168 Benchmark]: RCFGBuilder took 13992.98 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -130.2 MB). Peak memory consumption was 729.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:47:39,664 INFO L168 Benchmark]: TraceAbstraction took 206525.06 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 547.1 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-10 11:47:39,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2685.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 244.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 982.28 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 909.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13992.98 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -130.2 MB). Peak memory consumption was 729.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206525.06 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 547.1 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 206.4s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 172.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2885 SDtfs, 32858 SDslu, 2057 SDs, 0 SdLazy, 70958 SolverSat, 17049 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 123.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4555 GetRequests, 4444 SyntacticMatches, 24 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158140occurred 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: 20.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 20297 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 5223 NumberOfCodeBlocks, 5223 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7420 ConstructedInterpolants, 0 QuantifiedInterpolants, 7835370 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3592 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 23 InterpolantComputations, 9 PerfectInterpolantSequences, 5563/5965 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-47-39-685.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-47-39-685.csv Completed graceful shutdown