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_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:24:19,996 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:24:19,998 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:24:20,011 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:24:20,012 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:24:20,013 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:24:20,014 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:24:20,016 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:24:20,018 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:24:20,018 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:24:20,019 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:24:20,020 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:24:20,021 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:24:20,022 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:24:20,023 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:24:20,024 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:24:20,025 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:24:20,026 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:24:20,029 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:24:20,030 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:24:20,031 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:24:20,032 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:24:20,035 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:24:20,035 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:24:20,036 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:24:20,037 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:24:20,038 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:24:20,038 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:24:20,039 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:24:20,040 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:24:20,041 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:24:20,041 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 19:24:20,042 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 19:24:20,042 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 19:24:20,044 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 19:24:20,045 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 19:24:20,046 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 19:24:20,067 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:24:20,067 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:24:20,068 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:24:20,068 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:24:20,069 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:24:20,069 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:24:20,069 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:24:20,070 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:24:20,070 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:24:20,070 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:24:20,070 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:24:20,071 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:24:20,071 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:24:20,074 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:24:20,074 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:24:20,074 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:24:20,075 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:24:20,075 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:24:20,075 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:24:20,075 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:24:20,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:24:20,077 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:24:20,077 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:24:20,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:24:20,078 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:24:20,078 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:24:20,078 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:24:20,078 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:24:20,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:24:20,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:24:20,079 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:24:20,079 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:24:20,079 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:24:20,161 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:24:20,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:24:20,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:24:20,185 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:24:20,186 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:24:20,187 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label38_false-unreach-call.c [2018-07-23 19:24:20,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e583b75/94910ce7a8734abb86126c06f8ad7d9d/FLAGa2865be57 [2018-07-23 19:24:21,058 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:24:21,060 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label38_false-unreach-call.c [2018-07-23 19:24:21,094 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e583b75/94910ce7a8734abb86126c06f8ad7d9d/FLAGa2865be57 [2018-07-23 19:24:21,112 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e583b75/94910ce7a8734abb86126c06f8ad7d9d [2018-07-23 19:24:21,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:24:21,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:24:21,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:24:21,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:24:21,137 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:24:21,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:24:21" (1/1) ... [2018-07-23 19:24:21,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774e55b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:21, skipping insertion in model container [2018-07-23 19:24:21,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:24:21" (1/1) ... [2018-07-23 19:24:21,517 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:24:22,497 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:24:22,516 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:24:23,257 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:24:23,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23 WrapperNode [2018-07-23 19:24:23,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:24:23,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:24:23,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:24:23,513 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:24:23,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:23,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:23,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:24:23,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:24:23,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:24:23,756 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:24:24,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:24,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:24,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:24,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:24,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:24,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:24,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (1/1) ... [2018-07-23 19:24:24,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:24:24,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:24:24,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:24:24,690 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:24:24,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (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 19:24:24,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:24:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:24:24,769 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 19:24:24,770 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 19:24:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:24:24,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:24:24,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:24:24,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:24:24,771 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 19:24:24,771 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 19:24:24,771 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 19:24:24,771 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 19:24:24,772 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 19:24:24,772 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 19:24:34,597 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:24:34,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:24:34 BoogieIcfgContainer [2018-07-23 19:24:34,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:24:34,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:24:34,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:24:34,602 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:24:34,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:24:21" (1/3) ... [2018-07-23 19:24:34,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c8d384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:24:34, skipping insertion in model container [2018-07-23 19:24:34,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:24:23" (2/3) ... [2018-07-23 19:24:34,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c8d384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:24:34, skipping insertion in model container [2018-07-23 19:24:34,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:24:34" (3/3) ... [2018-07-23 19:24:34,606 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label38_false-unreach-call.c [2018-07-23 19:24:34,616 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:24:34,628 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:24:34,687 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:24:34,688 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:24:34,688 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:24:34,688 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:24:34,688 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:24:34,689 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:24:34,689 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:24:34,689 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:24:34,689 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:24:34,726 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-23 19:24:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-07-23 19:24:34,733 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:24:34,734 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] [2018-07-23 19:24:34,735 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 19:24:34,740 INFO L82 PathProgramCache]: Analyzing trace with hash 115157427, now seen corresponding path program 1 times [2018-07-23 19:24:34,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:24:34,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:24:34,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:24:34,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:24:34,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:24:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:24:35,156 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 19:24:35,158 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:24:35,159 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:24:35,159 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:24:35,165 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:24:35,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:24:35,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:24:35,180 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-07-23 19:24:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:24:48,734 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-07-23 19:24:48,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:24:48,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-07-23 19:24:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:24:48,789 INFO L225 Difference]: With dead ends: 3234 [2018-07-23 19:24:48,789 INFO L226 Difference]: Without dead ends: 2388 [2018-07-23 19:24:48,800 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:24:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-07-23 19:24:48,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-07-23 19:24:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-23 19:24:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-07-23 19:24:48,990 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 31 [2018-07-23 19:24:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:24:48,991 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-07-23 19:24:48,993 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:24:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-07-23 19:24:49,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-23 19:24:49,000 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:24:49,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:49,002 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 19:24:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash -340546248, now seen corresponding path program 1 times [2018-07-23 19:24:49,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:24:49,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:24:49,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:24:49,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:24:49,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:24:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:24:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:24:49,326 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:24:49,326 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:24:49,326 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:24:49,328 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:24:49,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:24:49,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:24:49,329 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 6 states. [2018-07-23 19:25:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:25:01,002 INFO L93 Difference]: Finished difference Result 4836 states and 7928 transitions. [2018-07-23 19:25:01,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:25:01,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-07-23 19:25:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:25:01,043 INFO L225 Difference]: With dead ends: 4836 [2018-07-23 19:25:01,043 INFO L226 Difference]: Without dead ends: 3238 [2018-07-23 19:25:01,049 INFO L573 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 [2018-07-23 19:25:01,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2018-07-23 19:25:01,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3208. [2018-07-23 19:25:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2018-07-23 19:25:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 4989 transitions. [2018-07-23 19:25:01,166 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 4989 transitions. Word has length 111 [2018-07-23 19:25:01,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:25:01,167 INFO L471 AbstractCegarLoop]: Abstraction has 3208 states and 4989 transitions. [2018-07-23 19:25:01,167 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:25:01,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 4989 transitions. [2018-07-23 19:25:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-23 19:25:01,175 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:25:01,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:01,175 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 19:25:01,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1908526993, now seen corresponding path program 1 times [2018-07-23 19:25:01,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:25:01,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:25:01,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:25:01,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:25:01,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:25:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:25:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:25:01,620 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:25:01,620 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:25:01,620 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:25:01,621 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:25:01,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:25:01,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:25:01,622 INFO L87 Difference]: Start difference. First operand 3208 states and 4989 transitions. Second operand 6 states. [2018-07-23 19:25:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:25:14,561 INFO L93 Difference]: Finished difference Result 11234 states and 17851 transitions. [2018-07-23 19:25:14,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:25:14,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-07-23 19:25:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:25:14,614 INFO L225 Difference]: With dead ends: 11234 [2018-07-23 19:25:14,614 INFO L226 Difference]: Without dead ends: 8032 [2018-07-23 19:25:14,634 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 19:25:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8032 states. [2018-07-23 19:25:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8032 to 7958. [2018-07-23 19:25:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7958 states. [2018-07-23 19:25:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7958 states to 7958 states and 11545 transitions. [2018-07-23 19:25:14,856 INFO L78 Accepts]: Start accepts. Automaton has 7958 states and 11545 transitions. Word has length 112 [2018-07-23 19:25:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:25:14,856 INFO L471 AbstractCegarLoop]: Abstraction has 7958 states and 11545 transitions. [2018-07-23 19:25:14,856 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:25:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7958 states and 11545 transitions. [2018-07-23 19:25:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-23 19:25:14,867 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:25:14,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:14,868 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 19:25:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash -359490396, now seen corresponding path program 1 times [2018-07-23 19:25:14,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:25:14,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:25:14,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:25:14,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:25:14,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:25:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:25:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:25:15,249 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:25:15,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 19:25:15,250 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:25:15,252 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 19:25:15,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 19:25:15,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-23 19:25:15,253 INFO L87 Difference]: Start difference. First operand 7958 states and 11545 transitions. Second operand 5 states. [2018-07-23 19:25:25,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:25:25,480 INFO L93 Difference]: Finished difference Result 24186 states and 36164 transitions. [2018-07-23 19:25:25,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 19:25:25,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-07-23 19:25:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:25:25,558 INFO L225 Difference]: With dead ends: 24186 [2018-07-23 19:25:25,559 INFO L226 Difference]: Without dead ends: 16234 [2018-07-23 19:25:25,587 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:25:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16234 states. [2018-07-23 19:25:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16234 to 16123. [2018-07-23 19:25:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16123 states. [2018-07-23 19:25:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16123 states to 16123 states and 22326 transitions. [2018-07-23 19:25:25,987 INFO L78 Accepts]: Start accepts. Automaton has 16123 states and 22326 transitions. Word has length 117 [2018-07-23 19:25:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:25:25,988 INFO L471 AbstractCegarLoop]: Abstraction has 16123 states and 22326 transitions. [2018-07-23 19:25:25,988 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 19:25:25,988 INFO L276 IsEmpty]: Start isEmpty. Operand 16123 states and 22326 transitions. [2018-07-23 19:25:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-23 19:25:25,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:25:25,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:25,993 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 19:25:25,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1692951396, now seen corresponding path program 1 times [2018-07-23 19:25:25,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:25:25,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:25:25,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:25:25,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:25:25,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:25:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:25:26,270 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:25:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:25:26,358 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:25:26,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:25:26,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:25:26,359 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:25:26,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:25:26,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:25:26,360 INFO L87 Difference]: Start difference. First operand 16123 states and 22326 transitions. Second operand 6 states. [2018-07-23 19:25:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:25:40,475 INFO L93 Difference]: Finished difference Result 50336 states and 73805 transitions. [2018-07-23 19:25:40,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:25:40,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-07-23 19:25:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:25:40,644 INFO L225 Difference]: With dead ends: 50336 [2018-07-23 19:25:40,644 INFO L226 Difference]: Without dead ends: 34219 [2018-07-23 19:25:40,718 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 19:25:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34219 states. [2018-07-23 19:25:41,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34219 to 34048. [2018-07-23 19:25:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34048 states. [2018-07-23 19:25:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34048 states to 34048 states and 47898 transitions. [2018-07-23 19:25:41,920 INFO L78 Accepts]: Start accepts. Automaton has 34048 states and 47898 transitions. Word has length 145 [2018-07-23 19:25:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:25:41,920 INFO L471 AbstractCegarLoop]: Abstraction has 34048 states and 47898 transitions. [2018-07-23 19:25:41,920 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:25:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 34048 states and 47898 transitions. [2018-07-23 19:25:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-23 19:25:41,930 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:25:41,930 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 19:25:41,930 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 19:25:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash 619520475, now seen corresponding path program 1 times [2018-07-23 19:25:41,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:25:41,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:25:41,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:25:41,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:25:41,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:25:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:25:42,277 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:25:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 48 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:25:42,693 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:25:42,693 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:25:42,694 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-07-23 19:25:42,697 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], [2039], [2041], [2044], [2052], [2060], [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], [2412], [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], [2588], [3264], [3265], [3266], [3267], [3269], [3270] [2018-07-23 19:25:42,787 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:25:42,788 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:26:50,375 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:26:50,377 INFO L272 AbstractInterpreter]: Visited 126 different actions 126 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-07-23 19:26:50,391 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:27:20,234 INFO L232 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 75.28% of their original sizes. [2018-07-23 19:27:20,234 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:27:20,737 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:27:20,738 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:27:20,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-07-23 19:27:20,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:27:20,739 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 19:27:20,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 19:27:20,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:27:20,740 INFO L87 Difference]: Start difference. First operand 34048 states and 47898 transitions. Second operand 8 states. Received shutdown request...