java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 20:22:27,110 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 20:22:27,112 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 20:22:27,124 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 20:22:27,124 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 20:22:27,125 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 20:22:27,126 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 20:22:27,131 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 20:22:27,133 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 20:22:27,136 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 20:22:27,137 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 20:22:27,137 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 20:22:27,138 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 20:22:27,139 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 20:22:27,140 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 20:22:27,141 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 20:22:27,142 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 20:22:27,144 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 20:22:27,146 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 20:22:27,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 20:22:27,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 20:22:27,150 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 20:22:27,152 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 20:22:27,152 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 20:22:27,153 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 20:22:27,153 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 20:22:27,154 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 20:22:27,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 20:22:27,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 20:22:27,157 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 20:22:27,157 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 20:22:27,158 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 20:22:27,158 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 20:22:27,158 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 20:22:27,159 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 20:22:27,160 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 20:22:27,160 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 20:22:27,185 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 20:22:27,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 20:22:27,190 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 20:22:27,190 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 20:22:27,190 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 20:22:27,190 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 20:22:27,190 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 20:22:27,191 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 20:22:27,191 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 20:22:27,191 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 20:22:27,191 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 20:22:27,191 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 20:22:27,193 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 20:22:27,193 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 20:22:27,193 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 20:22:27,193 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 20:22:27,194 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 20:22:27,194 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 20:22:27,194 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 20:22:27,194 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 20:22:27,194 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 20:22:27,195 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 20:22:27,195 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 20:22:27,195 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 20:22:27,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 20:22:27,195 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 20:22:27,195 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 20:22:27,198 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 20:22:27,198 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 20:22:27,198 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 20:22:27,198 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 20:22:27,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 20:22:27,199 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 20:22:27,199 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 20:22:27,199 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 20:22:27,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 20:22:27,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 20:22:27,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 20:22:27,279 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 20:22:27,279 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 20:22:27,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-07-21 20:22:27,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1c496431a/6755271d669143d78379761be7853b5f/FLAGd0a4ce1cc [2018-07-21 20:22:28,132 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 20:22:28,133 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-07-21 20:22:28,186 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1c496431a/6755271d669143d78379761be7853b5f/FLAGd0a4ce1cc [2018-07-21 20:22:28,208 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1c496431a/6755271d669143d78379761be7853b5f [2018-07-21 20:22:28,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 20:22:28,227 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 20:22:28,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 20:22:28,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 20:22:28,240 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 20:22:28,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:22:28" (1/1) ... [2018-07-21 20:22:28,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3bdfb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:28, skipping insertion in model container [2018-07-21 20:22:28,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:22:28" (1/1) ... [2018-07-21 20:22:28,578 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 20:22:29,574 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 20:22:29,596 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 20:22:30,510 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 20:22:30,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30 WrapperNode [2018-07-21 20:22:30,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 20:22:30,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 20:22:30,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 20:22:30,685 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 20:22:30,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:30,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:31,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 20:22:31,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 20:22:31,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 20:22:31,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 20:22:31,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:31,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:31,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:31,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:31,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:31,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:31,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... [2018-07-21 20:22:31,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 20:22:31,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 20:22:31,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 20:22:31,746 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 20:22:31,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 20:22:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 20:22:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 20:22:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 20:22:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 20:22:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 20:22:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 20:22:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 20:22:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 20:22:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 20:22:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 20:22:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 20:22:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 20:22:41,015 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 20:22:41,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:22:41 BoogieIcfgContainer [2018-07-21 20:22:41,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 20:22:41,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 20:22:41,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 20:22:41,021 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 20:22:41,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:22:28" (1/3) ... [2018-07-21 20:22:41,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397babd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:22:41, skipping insertion in model container [2018-07-21 20:22:41,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:22:30" (2/3) ... [2018-07-21 20:22:41,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397babd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:22:41, skipping insertion in model container [2018-07-21 20:22:41,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:22:41" (3/3) ... [2018-07-21 20:22:41,025 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label18_true-unreach-call.c [2018-07-21 20:22:41,033 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 20:22:41,042 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 20:22:41,100 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 20:22:41,101 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 20:22:41,101 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 20:22:41,102 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 20:22:41,102 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 20:22:41,102 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 20:22:41,102 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 20:22:41,102 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 20:22:41,102 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 20:22:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-21 20:22:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-21 20:22:41,152 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:22:41,154 INFO L358 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] [2018-07-21 20:22:41,154 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:22:41,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1744996204, now seen corresponding path program 1 times [2018-07-21 20:22:41,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:22:41,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:22:41,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:22:41,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:22:41,213 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:22:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:22:41,631 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 20:22:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:22:41,789 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:22:41,789 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 20:22:41,789 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:22:41,793 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 20:22:41,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 20:22:41,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 20:22:41,818 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-21 20:22:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:22:46,612 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-21 20:22:46,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 20:22:46,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-07-21 20:22:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:22:46,668 INFO L225 Difference]: With dead ends: 2251 [2018-07-21 20:22:46,668 INFO L226 Difference]: Without dead ends: 1474 [2018-07-21 20:22:46,683 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 20:22:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-21 20:22:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-21 20:22:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-21 20:22:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-07-21 20:22:46,865 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 64 [2018-07-21 20:22:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:22:46,867 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-07-21 20:22:46,867 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 20:22:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-07-21 20:22:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-21 20:22:46,878 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:22:46,882 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 20:22:46,882 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:22:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1622122799, now seen corresponding path program 1 times [2018-07-21 20:22:46,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:22:46,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:22:46,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:22:46,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:22:46,884 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:22:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:22:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:22:47,175 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:22:47,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 20:22:47,175 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:22:47,177 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 20:22:47,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 20:22:47,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 20:22:47,179 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-07-21 20:22:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:22:58,171 INFO L93 Difference]: Finished difference Result 5804 states and 10847 transitions. [2018-07-21 20:22:58,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 20:22:58,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-07-21 20:22:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:22:58,209 INFO L225 Difference]: With dead ends: 5804 [2018-07-21 20:22:58,209 INFO L226 Difference]: Without dead ends: 4336 [2018-07-21 20:22:58,218 INFO L578 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 [2018-07-21 20:22:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2018-07-21 20:22:58,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4309. [2018-07-21 20:22:58,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4309 states. [2018-07-21 20:22:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 6393 transitions. [2018-07-21 20:22:58,361 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 6393 transitions. Word has length 135 [2018-07-21 20:22:58,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:22:58,362 INFO L471 AbstractCegarLoop]: Abstraction has 4309 states and 6393 transitions. [2018-07-21 20:22:58,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 20:22:58,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 6393 transitions. [2018-07-21 20:22:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-21 20:22:58,372 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:22:58,372 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 20:22:58,372 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:22:58,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1406963598, now seen corresponding path program 1 times [2018-07-21 20:22:58,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:22:58,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:22:58,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:22:58,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:22:58,374 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:22:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:22:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:22:58,573 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:22:58,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 20:22:58,574 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:22:58,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 20:22:58,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 20:22:58,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 20:22:58,575 INFO L87 Difference]: Start difference. First operand 4309 states and 6393 transitions. Second operand 6 states. [2018-07-21 20:23:03,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:23:03,346 INFO L93 Difference]: Finished difference Result 11672 states and 18021 transitions. [2018-07-21 20:23:03,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:23:03,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-07-21 20:23:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:23:03,392 INFO L225 Difference]: With dead ends: 11672 [2018-07-21 20:23:03,393 INFO L226 Difference]: Without dead ends: 7369 [2018-07-21 20:23:03,404 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 20:23:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2018-07-21 20:23:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7263. [2018-07-21 20:23:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7263 states. [2018-07-21 20:23:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7263 states to 7263 states and 10291 transitions. [2018-07-21 20:23:03,701 INFO L78 Accepts]: Start accepts. Automaton has 7263 states and 10291 transitions. Word has length 138 [2018-07-21 20:23:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:23:03,701 INFO L471 AbstractCegarLoop]: Abstraction has 7263 states and 10291 transitions. [2018-07-21 20:23:03,701 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 20:23:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7263 states and 10291 transitions. [2018-07-21 20:23:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-21 20:23:03,708 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:23:03,708 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 20:23:03,709 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:23:03,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1665126578, now seen corresponding path program 1 times [2018-07-21 20:23:03,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:23:03,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:03,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:23:03,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:03,714 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:23:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:23:04,014 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 20:23:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:23:04,418 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:23:04,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 20:23:04,419 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:23:04,419 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 20:23:04,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 20:23:04,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 20:23:04,420 INFO L87 Difference]: Start difference. First operand 7263 states and 10291 transitions. Second operand 6 states. [2018-07-21 20:23:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:23:08,349 INFO L93 Difference]: Finished difference Result 17552 states and 25067 transitions. [2018-07-21 20:23:08,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:23:08,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-07-21 20:23:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:23:08,441 INFO L225 Difference]: With dead ends: 17552 [2018-07-21 20:23:08,448 INFO L226 Difference]: Without dead ends: 10295 [2018-07-21 20:23:08,468 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 20:23:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10295 states. [2018-07-21 20:23:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10295 to 10243. [2018-07-21 20:23:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10243 states. [2018-07-21 20:23:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 13283 transitions. [2018-07-21 20:23:08,770 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 13283 transitions. Word has length 172 [2018-07-21 20:23:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:23:08,771 INFO L471 AbstractCegarLoop]: Abstraction has 10243 states and 13283 transitions. [2018-07-21 20:23:08,771 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 20:23:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 13283 transitions. [2018-07-21 20:23:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-21 20:23:08,781 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:23:08,781 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 20:23:08,781 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:23:08,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1360629759, now seen corresponding path program 1 times [2018-07-21 20:23:08,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:23:08,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:08,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:23:08,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:23:08,783 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:23:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:23:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:23:09,381 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 20:23:09,381 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 20:23:09,382 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-07-21 20:23:09,385 INFO L201 CegarAbsIntRunner]: [0], [1], [743], [747], [753], [757], [759], [1648], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2059], [2061], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2120], [2128], [2136], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2180], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2288], [3020], [3021], [3022], [3023], [3025], [3026] [2018-07-21 20:23:09,473 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 20:23:09,473 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 20:23:19,240 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 20:23:19,242 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 20:23:19,254 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 20:23:28,472 INFO L232 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 78.21% of their original sizes. [2018-07-21 20:23:28,472 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 20:23:29,059 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 20:23:29,060 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 20:23:29,060 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-21 20:23:29,060 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:23:29,061 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-21 20:23:29,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-21 20:23:29,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-21 20:23:29,062 INFO L87 Difference]: Start difference. First operand 10243 states and 13283 transitions. Second operand 7 states. [2018-07-21 20:23:38,042 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 20:25:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:25:22,127 INFO L93 Difference]: Finished difference Result 21185 states and 27334 transitions. [2018-07-21 20:25:22,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:25:22,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2018-07-21 20:25:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:25:22,165 INFO L225 Difference]: With dead ends: 21185 [2018-07-21 20:25:22,166 INFO L226 Difference]: Without dead ends: 10948 [2018-07-21 20:25:22,196 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-21 20:25:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10948 states. [2018-07-21 20:25:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10948 to 10946. [2018-07-21 20:25:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10946 states. [2018-07-21 20:25:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10946 states to 10946 states and 13998 transitions. [2018-07-21 20:25:22,481 INFO L78 Accepts]: Start accepts. Automaton has 10946 states and 13998 transitions. Word has length 251 [2018-07-21 20:25:22,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:25:22,481 INFO L471 AbstractCegarLoop]: Abstraction has 10946 states and 13998 transitions. [2018-07-21 20:25:22,481 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-21 20:25:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 10946 states and 13998 transitions. [2018-07-21 20:25:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-21 20:25:22,495 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:25:22,496 INFO L358 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 20:25:22,496 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:25:22,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1875070598, now seen corresponding path program 1 times [2018-07-21 20:25:22,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:25:22,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:25:22,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:25:22,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:25:22,500 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:25:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:25:23,047 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-21 20:25:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 230 proven. 203 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 20:25:23,407 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 20:25:23,407 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 20:25:23,407 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 439 with the following transitions: [2018-07-21 20:25:23,407 INFO L201 CegarAbsIntRunner]: [0], [1], [743], [747], [753], [757], [759], [1648], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2059], [2061], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2120], [2128], [2136], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2180], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2288], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2608], [3020], [3021], [3022], [3023], [3025], [3026] [2018-07-21 20:25:23,424 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 20:25:23,424 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 20:25:50,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 20:25:50,246 INFO L272 AbstractInterpreter]: Visited 196 different actions 388 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 20:25:50,254 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown