java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label10_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:21:06,062 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:21:06,067 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:21:06,085 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:21:06,086 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:21:06,087 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:21:06,088 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:21:06,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:21:06,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:21:06,092 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:21:06,093 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:21:06,094 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:21:06,095 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:21:06,096 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:21:06,099 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:21:06,103 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:21:06,104 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:21:06,109 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:21:06,113 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:21:06,120 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:21:06,122 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:21:06,123 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:21:06,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:21:06,129 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:21:06,129 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:21:06,130 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:21:06,131 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:21:06,132 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:21:06,137 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:21:06,138 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:21:06,138 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:21:06,139 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 19:21:06,141 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 19:21:06,141 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 19:21:06,143 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 19:21:06,143 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 19:21:06,144 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 19:21:06,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:21:06,173 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:21:06,176 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:21:06,177 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:21:06,177 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:21:06,177 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:21:06,177 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:21:06,177 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:21:06,178 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:21:06,178 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:21:06,178 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:21:06,179 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:21:06,179 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:21:06,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:21:06,180 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:21:06,181 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:21:06,181 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:21:06,181 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:21:06,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:21:06,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:21:06,182 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:21:06,182 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:21:06,182 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:21:06,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:21:06,184 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:21:06,184 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:21:06,184 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:21:06,184 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:21:06,184 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:21:06,185 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:21:06,185 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:21:06,185 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:21:06,185 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:21:06,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:21:06,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:21:06,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:21:06,277 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:21:06,277 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:21:06,278 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label10_false-unreach-call.c [2018-07-23 19:21:06,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a14f3b3/4d60e5ee9b8f43ce9d449e401b614edf/FLAGe012cf8a1 [2018-07-23 19:21:07,148 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:21:07,149 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label10_false-unreach-call.c [2018-07-23 19:21:07,190 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a14f3b3/4d60e5ee9b8f43ce9d449e401b614edf/FLAGe012cf8a1 [2018-07-23 19:21:07,210 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59a14f3b3/4d60e5ee9b8f43ce9d449e401b614edf [2018-07-23 19:21:07,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:21:07,227 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:21:07,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:21:07,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:21:07,235 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:21:07,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:21:07" (1/1) ... [2018-07-23 19:21:07,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212fe84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:07, skipping insertion in model container [2018-07-23 19:21:07,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:21:07" (1/1) ... [2018-07-23 19:21:07,623 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:21:08,721 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:21:08,746 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:21:09,454 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:21:09,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09 WrapperNode [2018-07-23 19:21:09,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:21:09,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:21:09,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:21:09,690 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:21:09,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:09,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:09,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:21:09,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:21:09,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:21:09,979 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:21:10,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:10,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:10,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:10,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:10,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:10,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:10,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... [2018-07-23 19:21:10,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:21:10,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:21:10,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:21:10,842 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:21:10,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:21:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:21:10,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:21:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-23 19:21:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-23 19:21:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:21:10,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:21:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:21:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:21:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 19:21:10,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 19:21:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-23 19:21:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-23 19:21:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:21:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:21:22,555 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:21:22,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:21:22 BoogieIcfgContainer [2018-07-23 19:21:22,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:21:22,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:21:22,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:21:22,561 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:21:22,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:21:07" (1/3) ... [2018-07-23 19:21:22,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e145b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:21:22, skipping insertion in model container [2018-07-23 19:21:22,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:21:09" (2/3) ... [2018-07-23 19:21:22,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e145b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:21:22, skipping insertion in model container [2018-07-23 19:21:22,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:21:22" (3/3) ... [2018-07-23 19:21:22,565 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label10_false-unreach-call.c [2018-07-23 19:21:22,574 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:21:22,584 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:21:22,647 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:21:22,648 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:21:22,648 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:21:22,648 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:21:22,649 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:21:22,649 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:21:22,649 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:21:22,649 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:21:22,649 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:21:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-23 19:21:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-23 19:21:22,695 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:21:22,696 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:21:22,696 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:21:22,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1017925036, now seen corresponding path program 1 times [2018-07-23 19:21:22,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:21:22,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:21:22,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:21:22,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:21:22,766 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:21:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:21:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:21:23,183 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:21:23,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 19:21:23,183 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:21:23,192 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 19:21:23,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 19:21:23,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:21:23,212 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-23 19:21:32,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:21:32,095 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-23 19:21:32,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 19:21:32,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-07-23 19:21:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:21:32,130 INFO L225 Difference]: With dead ends: 2446 [2018-07-23 19:21:32,131 INFO L226 Difference]: Without dead ends: 1604 [2018-07-23 19:21:32,143 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:21:32,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-23 19:21:32,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-23 19:21:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-23 19:21:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-07-23 19:21:32,306 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 34 [2018-07-23 19:21:32,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:21:32,307 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-07-23 19:21:32,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 19:21:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-07-23 19:21:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 19:21:32,317 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:21:32,318 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:21:32,318 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:21:32,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1595146866, now seen corresponding path program 1 times [2018-07-23 19:21:32,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:21:32,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:21:32,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:21:32,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:21:32,324 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:21:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:21:32,649 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:21:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:21:32,827 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:21:32,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:21:32,827 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:21:32,829 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:21:32,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:21:32,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:21:32,830 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-07-23 19:21:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:21:49,645 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-07-23 19:21:49,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:21:49,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-07-23 19:21:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:21:49,693 INFO L225 Difference]: With dead ends: 6330 [2018-07-23 19:21:49,693 INFO L226 Difference]: Without dead ends: 4732 [2018-07-23 19:21:49,703 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 19:21:49,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-07-23 19:21:49,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-07-23 19:21:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-07-23 19:21:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-07-23 19:21:49,869 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 112 [2018-07-23 19:21:49,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:21:49,869 INFO L471 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-07-23 19:21:49,870 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:21:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-07-23 19:21:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 19:21:49,879 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:21:49,879 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:21:49,880 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:21:49,880 INFO L82 PathProgramCache]: Analyzing trace with hash 991895310, now seen corresponding path program 1 times [2018-07-23 19:21:49,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:21:49,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:21:49,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:21:49,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:21:49,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:21:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:21:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:21:50,172 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:21:50,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 19:21:50,173 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:21:50,173 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 19:21:50,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 19:21:50,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-23 19:21:50,174 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-07-23 19:22:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:22:03,864 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-07-23 19:22:03,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 19:22:03,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-07-23 19:22:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:22:03,916 INFO L225 Difference]: With dead ends: 14300 [2018-07-23 19:22:03,916 INFO L226 Difference]: Without dead ends: 9606 [2018-07-23 19:22:03,932 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:22:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-07-23 19:22:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-07-23 19:22:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-07-23 19:22:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-07-23 19:22:04,182 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 114 [2018-07-23 19:22:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:22:04,183 INFO L471 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-07-23 19:22:04,183 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 19:22:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-07-23 19:22:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-23 19:22:04,185 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:22:04,186 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:22:04,186 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:22:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1996013187, now seen corresponding path program 1 times [2018-07-23 19:22:04,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:22:04,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:22:04,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:22:04,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:22:04,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:22:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:22:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:22:04,539 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:22:04,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 19:22:04,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:22:04,540 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 19:22:04,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 19:22:04,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-23 19:22:04,543 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 5 states. [2018-07-23 19:22:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:22:27,419 INFO L93 Difference]: Finished difference Result 34829 states and 53890 transitions. [2018-07-23 19:22:27,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 19:22:27,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-07-23 19:22:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:22:27,567 INFO L225 Difference]: With dead ends: 34829 [2018-07-23 19:22:27,567 INFO L226 Difference]: Without dead ends: 25311 [2018-07-23 19:22:27,621 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:22:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25311 states. [2018-07-23 19:22:28,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25311 to 25216. [2018-07-23 19:22:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25216 states. [2018-07-23 19:22:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25216 states to 25216 states and 35146 transitions. [2018-07-23 19:22:28,202 INFO L78 Accepts]: Start accepts. Automaton has 25216 states and 35146 transitions. Word has length 125 [2018-07-23 19:22:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:22:28,203 INFO L471 AbstractCegarLoop]: Abstraction has 25216 states and 35146 transitions. [2018-07-23 19:22:28,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 19:22:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 25216 states and 35146 transitions. [2018-07-23 19:22:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-07-23 19:22:28,207 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:22:28,207 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:22:28,207 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:22:28,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1262969375, now seen corresponding path program 1 times [2018-07-23 19:22:28,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:22:28,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:22:28,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:22:28,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:22:28,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:22:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:22:28,463 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:22:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:22:28,771 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:22:28,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:22:28,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:22:28,772 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:22:28,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:22:28,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:22:28,772 INFO L87 Difference]: Start difference. First operand 25216 states and 35146 transitions. Second operand 6 states. [2018-07-23 19:22:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:22:43,285 INFO L93 Difference]: Finished difference Result 66372 states and 97080 transitions. [2018-07-23 19:22:43,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:22:43,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-07-23 19:22:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:22:43,424 INFO L225 Difference]: With dead ends: 66372 [2018-07-23 19:22:43,425 INFO L226 Difference]: Without dead ends: 41162 [2018-07-23 19:22:43,485 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 19:22:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41162 states. [2018-07-23 19:22:44,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41162 to 41003. [2018-07-23 19:22:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41003 states. [2018-07-23 19:22:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41003 states to 41003 states and 54731 transitions. [2018-07-23 19:22:44,338 INFO L78 Accepts]: Start accepts. Automaton has 41003 states and 54731 transitions. Word has length 159 [2018-07-23 19:22:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:22:44,338 INFO L471 AbstractCegarLoop]: Abstraction has 41003 states and 54731 transitions. [2018-07-23 19:22:44,338 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:22:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 41003 states and 54731 transitions. [2018-07-23 19:22:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-23 19:22:44,347 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:22:44,348 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:22:44,348 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:22:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash -804769287, now seen corresponding path program 1 times [2018-07-23 19:22:44,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:22:44,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:22:44,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:22:44,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:22:44,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:22:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:22:44,649 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:22:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 54 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:22:44,941 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:22:44,941 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:22:44,942 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-07-23 19:22:44,944 INFO L201 CegarAbsIntRunner]: [0], [1], [103], [107], [113], [117], [119], [1892], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2063], [2065], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2364], [2372], [2380], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2424], [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], [2540], [3264], [3265], [3266], [3267], [3269], [3270] [2018-07-23 19:22:45,008 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:22:45,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:23:40,482 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:23:40,484 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-07-23 19:23:40,496 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:24:10,699 INFO L232 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 75.34% of their original sizes. [2018-07-23 19:24:10,700 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:24:11,390 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:24:11,394 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:24:11,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-07-23 19:24:11,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:24:11,395 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 19:24:11,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 19:24:11,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:24:11,396 INFO L87 Difference]: Start difference. First operand 41003 states and 54731 transitions. Second operand 8 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown