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/Problem19_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:09:20,977 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:09:20,980 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:09:20,997 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:09:20,998 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:09:21,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:09:21,001 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:09:21,003 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:09:21,006 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:09:21,012 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:09:21,013 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:09:21,013 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:09:21,015 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:09:21,016 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:09:21,017 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:09:21,021 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:09:21,022 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:09:21,025 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:09:21,030 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:09:21,034 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:09:21,035 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:09:21,037 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:09:21,040 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:09:21,041 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:09:21,041 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:09:21,043 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:09:21,043 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:09:21,044 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:09:21,045 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:09:21,046 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:09:21,048 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:09:21,049 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 20:09:21,049 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:09:21,049 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:09:21,050 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:09:21,051 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:09:21,051 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 20:09:21,081 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:09:21,081 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:09:21,082 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:09:21,082 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:09:21,083 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:09:21,083 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:09:21,083 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:09:21,083 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:09:21,083 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:09:21,084 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:09:21,084 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:09:21,084 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:09:21,085 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:09:21,085 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:09:21,085 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:09:21,085 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:09:21,085 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:09:21,086 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:09:21,086 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:09:21,086 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:09:21,086 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:09:21,086 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:09:21,087 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:09:21,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:09:21,087 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:09:21,087 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:09:21,087 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:09:21,088 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:09:21,088 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:09:21,088 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:09:21,088 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:09:21,088 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:09:21,089 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:09:21,144 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:09:21,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:09:21,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:09:21,162 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:09:21,162 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:09:21,163 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c [2018-07-23 20:09:21,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751bb3cca/0c492fe7f687464d8aba15ba3954e474/FLAG51ef091a7 [2018-07-23 20:09:22,099 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:09:22,100 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c [2018-07-23 20:09:22,147 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751bb3cca/0c492fe7f687464d8aba15ba3954e474/FLAG51ef091a7 [2018-07-23 20:09:22,164 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751bb3cca/0c492fe7f687464d8aba15ba3954e474 [2018-07-23 20:09:22,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:09:22,178 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:09:22,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:09:22,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:09:22,187 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:09:22,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:09:22" (1/1) ... [2018-07-23 20:09:22,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d65a7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:22, skipping insertion in model container [2018-07-23 20:09:22,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:09:22" (1/1) ... [2018-07-23 20:09:22,677 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:09:24,765 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:09:24,786 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:09:26,077 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:09:26,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26 WrapperNode [2018-07-23 20:09:26,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:09:26,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:09:26,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:09:26,746 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:09:26,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:26,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:27,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:09:27,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:09:27,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:09:27,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:09:28,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:28,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:28,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:28,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:28,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:28,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:28,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (1/1) ... [2018-07-23 20:09:28,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:09:28,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:09:28,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:09:28,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:09:28,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (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 20:09:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:09:29,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:09:29,030 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 20:09:29,030 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 20:09:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:09:29,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:09:29,030 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_output5 [2018-07-23 20:09:29,030 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_output5 [2018-07-23 20:09:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:09:29,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:09:29,031 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 20:09:29,031 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 20:09:29,032 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 20:09:29,032 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 20:09:29,033 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_output6 [2018-07-23 20:09:29,033 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_output6 [2018-07-23 20:09:29,033 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 20:09:29,033 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 20:09:47,433 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:09:47,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:09:47 BoogieIcfgContainer [2018-07-23 20:09:47,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:09:47,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:09:47,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:09:47,438 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:09:47,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:09:22" (1/3) ... [2018-07-23 20:09:47,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdef22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:09:47, skipping insertion in model container [2018-07-23 20:09:47,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:09:26" (2/3) ... [2018-07-23 20:09:47,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdef22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:09:47, skipping insertion in model container [2018-07-23 20:09:47,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:09:47" (3/3) ... [2018-07-23 20:09:47,442 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label26_false-unreach-call.c [2018-07-23 20:09:47,452 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:09:47,463 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:09:47,528 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:09:47,529 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:09:47,529 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:09:47,529 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:09:47,529 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:09:47,529 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:09:47,529 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:09:47,530 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:09:47,530 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:09:47,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-23 20:09:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-23 20:09:47,595 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:09:47,596 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] [2018-07-23 20:09:47,597 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 20:09:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1714312488, now seen corresponding path program 1 times [2018-07-23 20:09:47,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:09:47,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:09:47,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:09:47,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:09:47,652 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:09:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:09:48,038 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:09:48,081 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 20:09:48,083 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:09:48,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:09:48,084 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:09:48,092 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:09:48,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:09:48,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:09:48,111 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-23 20:10:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:10:04,345 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-07-23 20:10:04,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:10:04,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-07-23 20:10:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:10:04,421 INFO L225 Difference]: With dead ends: 4999 [2018-07-23 20:10:04,421 INFO L226 Difference]: Without dead ends: 3219 [2018-07-23 20:10:04,437 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:10:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-07-23 20:10:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-07-23 20:10:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-07-23 20:10:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-07-23 20:10:04,667 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 33 [2018-07-23 20:10:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:10:04,668 INFO L471 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-07-23 20:10:04,668 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:10:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-07-23 20:10:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-23 20:10:04,678 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:10:04,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:04,681 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 20:10:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1481726368, now seen corresponding path program 1 times [2018-07-23 20:10:04,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:10:04,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:10:04,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:10:04,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:10:04,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:10:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:10:05,125 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:10:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:10:05,536 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:10:05,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:10:05,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:10:05,538 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:10:05,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:10:05,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:10:05,540 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-07-23 20:10:37,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:10:37,064 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-07-23 20:10:37,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:10:37,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-07-23 20:10:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:10:37,100 INFO L225 Difference]: With dead ends: 9331 [2018-07-23 20:10:37,100 INFO L226 Difference]: Without dead ends: 6122 [2018-07-23 20:10:37,113 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:10:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-07-23 20:10:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-07-23 20:10:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-07-23 20:10:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9617 transitions. [2018-07-23 20:10:37,294 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9617 transitions. Word has length 105 [2018-07-23 20:10:37,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:10:37,295 INFO L471 AbstractCegarLoop]: Abstraction has 6084 states and 9617 transitions. [2018-07-23 20:10:37,295 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:10:37,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9617 transitions. [2018-07-23 20:10:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-23 20:10:37,301 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:10:37,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:37,302 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 20:10:37,304 INFO L82 PathProgramCache]: Analyzing trace with hash -249373918, now seen corresponding path program 1 times [2018-07-23 20:10:37,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:10:37,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:10:37,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:10:37,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:10:37,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:10:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:10:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:10:37,643 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:10:37,643 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:10:37,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:10:37,644 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:10:37,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:10:37,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:10:37,645 INFO L87 Difference]: Start difference. First operand 6084 states and 9617 transitions. Second operand 6 states. [2018-07-23 20:10:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:10:57,616 INFO L93 Difference]: Finished difference Result 13731 states and 21808 transitions. [2018-07-23 20:10:57,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:10:57,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-07-23 20:10:57,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:10:57,657 INFO L225 Difference]: With dead ends: 13731 [2018-07-23 20:10:57,657 INFO L226 Difference]: Without dead ends: 7653 [2018-07-23 20:10:57,671 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:10:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7653 states. [2018-07-23 20:10:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7653 to 7595. [2018-07-23 20:10:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7595 states. [2018-07-23 20:10:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7595 states to 7595 states and 11260 transitions. [2018-07-23 20:10:57,833 INFO L78 Accepts]: Start accepts. Automaton has 7595 states and 11260 transitions. Word has length 123 [2018-07-23 20:10:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:10:57,833 INFO L471 AbstractCegarLoop]: Abstraction has 7595 states and 11260 transitions. [2018-07-23 20:10:57,834 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:10:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7595 states and 11260 transitions. [2018-07-23 20:10:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-23 20:10:57,836 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:10:57,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:57,836 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 20:10:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash 144268838, now seen corresponding path program 1 times [2018-07-23 20:10:57,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:10:57,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:10:57,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:10:57,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:10:57,838 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:10:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:10:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:10:58,006 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:10:58,006 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:10:58,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:10:58,007 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:10:58,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:10:58,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:10:58,008 INFO L87 Difference]: Start difference. First operand 7595 states and 11260 transitions. Second operand 5 states. [2018-07-23 20:11:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:11:20,483 INFO L93 Difference]: Finished difference Result 23169 states and 34713 transitions. [2018-07-23 20:11:20,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 20:11:20,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-07-23 20:11:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:11:20,545 INFO L225 Difference]: With dead ends: 23169 [2018-07-23 20:11:20,545 INFO L226 Difference]: Without dead ends: 15580 [2018-07-23 20:11:20,572 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:11:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15580 states. [2018-07-23 20:11:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15580 to 15244. [2018-07-23 20:11:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15244 states. [2018-07-23 20:11:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15244 states to 15244 states and 21984 transitions. [2018-07-23 20:11:20,950 INFO L78 Accepts]: Start accepts. Automaton has 15244 states and 21984 transitions. Word has length 125 [2018-07-23 20:11:20,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:11:20,951 INFO L471 AbstractCegarLoop]: Abstraction has 15244 states and 21984 transitions. [2018-07-23 20:11:20,951 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:11:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 15244 states and 21984 transitions. [2018-07-23 20:11:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-23 20:11:20,954 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:11:20,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:20,954 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 20:11:20,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1268411470, now seen corresponding path program 1 times [2018-07-23 20:11:20,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:11:20,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:11:20,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:11:20,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:11:20,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:11:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:11:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:11:21,259 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:11:21,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:11:21,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:11:21,260 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:11:21,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:11:21,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:11:21,261 INFO L87 Difference]: Start difference. First operand 15244 states and 21984 transitions. Second operand 5 states. [2018-07-23 20:11:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:11:49,906 INFO L93 Difference]: Finished difference Result 46507 states and 68129 transitions. [2018-07-23 20:11:49,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 20:11:49,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-07-23 20:11:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:11:50,034 INFO L225 Difference]: With dead ends: 46507 [2018-07-23 20:11:50,035 INFO L226 Difference]: Without dead ends: 31269 [2018-07-23 20:11:50,071 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:11:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31269 states. [2018-07-23 20:11:50,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31269 to 30573. [2018-07-23 20:11:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30573 states. [2018-07-23 20:11:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30573 states to 30573 states and 40066 transitions. [2018-07-23 20:11:50,660 INFO L78 Accepts]: Start accepts. Automaton has 30573 states and 40066 transitions. Word has length 145 [2018-07-23 20:11:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:11:50,660 INFO L471 AbstractCegarLoop]: Abstraction has 30573 states and 40066 transitions. [2018-07-23 20:11:50,660 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:11:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 30573 states and 40066 transitions. [2018-07-23 20:11:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-07-23 20:11:50,665 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:11:50,666 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:11:50,666 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 20:11:50,666 INFO L82 PathProgramCache]: Analyzing trace with hash 204216327, now seen corresponding path program 1 times [2018-07-23 20:11:50,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:11:50,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:11:50,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:11:50,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:11:50,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:11:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:11:51,040 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:11:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 20:11:51,580 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:11:51,580 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:11:51,581 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 341 with the following transitions: [2018-07-23 20:11:51,585 INFO L201 CegarAbsIntRunner]: [0], [1], [2158], [2162], [2168], [2172], [2174], [5251], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5414], [5416], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5723], [5731], [5739], [5751], [5755], [5766], [5770], [5774], [5778], [5782], [5786], [5790], [5794], [5798], [5802], [5806], [5810], [5821], [5832], [5843], [5847], [5851], [5862], [5865], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5970], [5974], [5978], [5982], [5986], [5990], [6001], [6005], [6009], [6020], [6024], [6028], [6032], [6036], [6040], [6044], [6048], [6052], [6056], [6060], [6064], [6075], [6079], [6083], [6087], [6091], [6095], [6099], [6103], [6107], [6111], [6115], [6126], [6130], [6134], [6145], [6149], [6153], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6244], [6248], [6252], [6256], [6260], [6264], [6275], [6279], [6283], [6287], [6291], [6302], [6306], [6310], [6314], [6318], [6322], [6326], [6330], [6334], [6338], [6349], [6353], [6357], [6368], [6372], [6376], [6380], [6384], [6395], [6399], [6403], [6407], [6411], [6415], [6426], [6437], [6441], [6445], [6449], [6453], [6456], [6461], [6463], [6826], [6829], [6830], [6831], [6835], [6836] [2018-07-23 20:11:51,676 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:11:51,677 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:12:10,231 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:12:10,233 INFO L272 AbstractInterpreter]: Visited 220 different actions 220 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-07-23 20:12:10,261 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:12:18,745 INFO L232 lantSequenceWeakener]: Weakened 330 states. On average, predicates are now at 75.21% of their original sizes. [2018-07-23 20:12:18,746 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:12:19,243 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:12:19,244 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:12:19,244 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 20:12:19,244 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:12:19,245 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 20:12:19,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 20:12:19,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 20:12:19,246 INFO L87 Difference]: Start difference. First operand 30573 states and 40066 transitions. Second operand 7 states. Received shutdown request...