java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:34:38,865 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:34:38,868 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:34:38,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:34:38,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:34:38,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:34:38,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:34:38,892 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:34:38,895 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:34:38,902 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:34:38,903 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:34:38,903 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:34:38,905 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:34:38,906 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:34:38,907 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:34:38,908 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:34:38,909 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:34:38,911 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:34:38,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:34:38,914 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:34:38,915 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:34:38,916 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:34:38,919 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:34:38,919 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:34:38,919 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:34:38,920 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:34:38,921 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:34:38,922 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:34:38,922 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:34:38,923 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:34:38,924 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:34:38,924 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 10:34:38,925 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 10:34:38,925 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 10:34:38,926 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 10:34:38,926 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 10:34:38,927 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 10:34:38,949 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:34:38,949 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:34:38,950 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:34:38,950 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:34:38,950 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:34:38,951 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:34:38,951 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:34:38,951 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:34:38,951 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:34:38,951 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:34:38,952 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:34:38,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:34:38,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:34:38,953 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:34:38,953 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:34:38,953 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:34:38,953 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:34:38,956 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:34:38,957 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:34:38,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:34:38,957 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:34:38,957 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:34:38,958 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:34:38,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:34:38,958 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:34:38,958 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:34:38,958 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:34:38,959 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:34:38,959 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:34:38,959 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:34:38,959 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:34:38,963 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:34:38,964 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:34:39,038 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:34:39,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:34:39,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:34:39,056 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:34:39,056 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:34:39,057 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label22_true-unreach-call.c [2018-09-10 10:34:39,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613f7bdc0/00d80b34faf94c4eb98abefe248c58aa/FLAGea1c02473 [2018-09-10 10:34:39,883 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:34:39,884 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label22_true-unreach-call.c [2018-09-10 10:34:39,915 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613f7bdc0/00d80b34faf94c4eb98abefe248c58aa/FLAGea1c02473 [2018-09-10 10:34:39,932 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/613f7bdc0/00d80b34faf94c4eb98abefe248c58aa [2018-09-10 10:34:39,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:34:39,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:34:39,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:34:39,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:34:39,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:34:39,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:34:39" (1/1) ... [2018-09-10 10:34:39,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a681a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:39, skipping insertion in model container [2018-09-10 10:34:39,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:34:39" (1/1) ... [2018-09-10 10:34:40,292 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:34:41,434 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:34:41,452 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:34:42,509 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:34:42,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42 WrapperNode [2018-09-10 10:34:42,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:34:42,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:34:42,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:34:42,653 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:34:42,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:42,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:42,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:34:42,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:34:42,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:34:42,788 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:34:43,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:43,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:43,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:43,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:43,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:43,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:43,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... [2018-09-10 10:34:43,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:34:43,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:34:43,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:34:43,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:34:43,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:34:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:34:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:34:43,492 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 10:34:43,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 10:34:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 10:34:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 10:34:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:34:43,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:34:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 10:34:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 10:34:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:34:43,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:34:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 10:34:43,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 10:34:55,914 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:34:55,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:34:55 BoogieIcfgContainer [2018-09-10 10:34:55,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:34:55,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:34:55,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:34:55,919 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:34:55,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:34:39" (1/3) ... [2018-09-10 10:34:55,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b59f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:34:55, skipping insertion in model container [2018-09-10 10:34:55,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:34:42" (2/3) ... [2018-09-10 10:34:55,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b59f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:34:55, skipping insertion in model container [2018-09-10 10:34:55,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:34:55" (3/3) ... [2018-09-10 10:34:55,923 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label22_true-unreach-call.c [2018-09-10 10:34:55,934 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:34:55,944 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:34:56,007 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:34:56,007 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:34:56,008 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:34:56,008 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:34:56,008 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:34:56,008 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:34:56,008 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:34:56,008 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:34:56,008 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:34:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-10 10:34:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-09-10 10:34:56,116 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:34:56,119 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:34:56,120 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:34:56,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1639713388, now seen corresponding path program 1 times [2018-09-10 10:34:56,129 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:34:56,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:34:56,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:34:56,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:34:56,186 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:34:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:34:57,767 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:34:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:34:58,865 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:34:58,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:34:58,865 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:34:58,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:34:58,884 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:34:58,885 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:34:58,887 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-10 10:35:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:35:05,981 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-10 10:35:05,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:35:05,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 826 [2018-09-10 10:35:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:35:06,032 INFO L225 Difference]: With dead ends: 2647 [2018-09-10 10:35:06,032 INFO L226 Difference]: Without dead ends: 1738 [2018-09-10 10:35:06,044 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:35:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-10 10:35:06,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-10 10:35:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-10 10:35:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3121 transitions. [2018-09-10 10:35:06,224 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3121 transitions. Word has length 826 [2018-09-10 10:35:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:35:06,230 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3121 transitions. [2018-09-10 10:35:06,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:35:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3121 transitions. [2018-09-10 10:35:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2018-09-10 10:35:06,306 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:35:06,307 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:35:06,308 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:35:06,309 INFO L82 PathProgramCache]: Analyzing trace with hash -637253205, now seen corresponding path program 1 times [2018-09-10 10:35:06,309 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:35:06,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:35:06,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:35:06,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:35:06,312 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:35:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:35:06,760 WARN L175 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:35:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:35:07,508 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:35:07,508 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 10:35:07,508 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:35:07,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:35:07,512 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:35:07,512 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:35:07,512 INFO L87 Difference]: Start difference. First operand 1738 states and 3121 transitions. Second operand 6 states. [2018-09-10 10:35:18,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:35:18,533 INFO L93 Difference]: Finished difference Result 5353 states and 9715 transitions. [2018-09-10 10:35:18,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:35:18,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 885 [2018-09-10 10:35:18,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:35:18,559 INFO L225 Difference]: With dead ends: 5353 [2018-09-10 10:35:18,559 INFO L226 Difference]: Without dead ends: 3621 [2018-09-10 10:35:18,567 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:35:18,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2018-09-10 10:35:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3589. [2018-09-10 10:35:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2018-09-10 10:35:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 6080 transitions. [2018-09-10 10:35:18,689 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 6080 transitions. Word has length 885 [2018-09-10 10:35:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:35:18,690 INFO L480 AbstractCegarLoop]: Abstraction has 3589 states and 6080 transitions. [2018-09-10 10:35:18,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:35:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 6080 transitions. [2018-09-10 10:35:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2018-09-10 10:35:18,730 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:35:18,731 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:35:18,731 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:35:18,732 INFO L82 PathProgramCache]: Analyzing trace with hash -463145597, now seen corresponding path program 1 times [2018-09-10 10:35:18,732 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:35:18,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:35:18,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:35:18,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:35:18,734 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:35:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:35:19,283 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:35:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:35:20,018 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:35:20,018 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 10:35:20,019 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:35:20,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:35:20,021 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:35:20,021 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:35:20,021 INFO L87 Difference]: Start difference. First operand 3589 states and 6080 transitions. Second operand 6 states. [2018-09-10 10:35:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:35:27,781 INFO L93 Difference]: Finished difference Result 9116 states and 15455 transitions. [2018-09-10 10:35:27,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:35:27,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 905 [2018-09-10 10:35:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:35:27,823 INFO L225 Difference]: With dead ends: 9116 [2018-09-10 10:35:27,824 INFO L226 Difference]: Without dead ends: 5533 [2018-09-10 10:35:27,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:35:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2018-09-10 10:35:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5499. [2018-09-10 10:35:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5499 states. [2018-09-10 10:35:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 8494 transitions. [2018-09-10 10:35:27,989 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 8494 transitions. Word has length 905 [2018-09-10 10:35:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:35:27,992 INFO L480 AbstractCegarLoop]: Abstraction has 5499 states and 8494 transitions. [2018-09-10 10:35:27,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:35:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 8494 transitions. [2018-09-10 10:35:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2018-09-10 10:35:28,018 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:35:28,019 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:35:28,020 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:35:28,020 INFO L82 PathProgramCache]: Analyzing trace with hash -2071657408, now seen corresponding path program 1 times [2018-09-10 10:35:28,020 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:35:28,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:35:28,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:35:28,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:35:28,022 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:35:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:35:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:35:29,462 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:35:29,462 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:35:29,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:35:29,484 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:35:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:35:29,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:35:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:35:30,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:35:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:35:31,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:35:31,853 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:35:31,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:35:31,884 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:35:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:35:32,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:35:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-10 10:35:33,972 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:35:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-10 10:35:34,987 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-10 10:35:34,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 17 [2018-09-10 10:35:34,988 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:35:34,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:35:34,990 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:35:34,991 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:35:34,991 INFO L87 Difference]: Start difference. First operand 5499 states and 8494 transitions. Second operand 5 states. [2018-09-10 10:35:42,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:35:42,755 INFO L93 Difference]: Finished difference Result 16464 states and 26307 transitions. [2018-09-10 10:35:42,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:35:42,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 925 [2018-09-10 10:35:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:35:42,805 INFO L225 Difference]: With dead ends: 16464 [2018-09-10 10:35:42,805 INFO L226 Difference]: Without dead ends: 10971 [2018-09-10 10:35:42,823 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3705 GetRequests, 3688 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-09-10 10:35:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2018-09-10 10:35:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 10865. [2018-09-10 10:35:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10865 states. [2018-09-10 10:35:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10865 states to 10865 states and 15483 transitions. [2018-09-10 10:35:43,094 INFO L78 Accepts]: Start accepts. Automaton has 10865 states and 15483 transitions. Word has length 925 [2018-09-10 10:35:43,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:35:43,095 INFO L480 AbstractCegarLoop]: Abstraction has 10865 states and 15483 transitions. [2018-09-10 10:35:43,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:35:43,095 INFO L276 IsEmpty]: Start isEmpty. Operand 10865 states and 15483 transitions. [2018-09-10 10:35:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2018-09-10 10:35:43,138 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:35:43,141 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:35:43,141 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:35:43,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1630203321, now seen corresponding path program 1 times [2018-09-10 10:35:43,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:35:43,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:35:43,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:35:43,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:35:43,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:35:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:35:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 150 proven. 58 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 10:35:44,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:35:44,308 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:35:44,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:35:44,325 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:35:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:35:44,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:35:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:35:45,864 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:35:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 150 proven. 58 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 10:35:46,541 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:35:46,541 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:35:46,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:35:46,557 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:35:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:35:47,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:35:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:35:48,419 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:35:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 150 proven. 58 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 10:35:48,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:35:48,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-10 10:35:48,940 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:35:48,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:35:48,942 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:35:48,942 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:35:48,942 INFO L87 Difference]: Start difference. First operand 10865 states and 15483 transitions. Second operand 9 states. [2018-09-10 10:36:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:36:12,444 INFO L93 Difference]: Finished difference Result 41212 states and 71676 transitions. [2018-09-10 10:36:12,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-10 10:36:12,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 973 [2018-09-10 10:36:12,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:36:12,643 INFO L225 Difference]: With dead ends: 41212 [2018-09-10 10:36:12,644 INFO L226 Difference]: Without dead ends: 30353 [2018-09-10 10:36:12,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3986 GetRequests, 3926 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=698, Invalid=2962, Unknown=0, NotChecked=0, Total=3660 [2018-09-10 10:36:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30353 states. [2018-09-10 10:36:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30353 to 29480. [2018-09-10 10:36:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29480 states. [2018-09-10 10:36:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29480 states to 29480 states and 40152 transitions. [2018-09-10 10:36:13,850 INFO L78 Accepts]: Start accepts. Automaton has 29480 states and 40152 transitions. Word has length 973 [2018-09-10 10:36:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:36:13,850 INFO L480 AbstractCegarLoop]: Abstraction has 29480 states and 40152 transitions. [2018-09-10 10:36:13,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:36:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 29480 states and 40152 transitions. [2018-09-10 10:36:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2018-09-10 10:36:13,989 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:36:13,990 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:36:13,990 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:36:13,991 INFO L82 PathProgramCache]: Analyzing trace with hash -398594977, now seen corresponding path program 1 times [2018-09-10 10:36:13,991 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:36:13,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:36:13,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:36:13,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:36:13,992 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:36:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:36:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 297 proven. 48 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:15,391 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:36:15,391 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:36:15,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:36:15,412 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:36:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:36:15,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:36:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:17,074 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:36:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 297 proven. 48 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:17,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:36:17,954 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:36:17,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:36:17,970 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:36:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:36:18,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:36:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:19,718 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:36:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 297 proven. 48 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:20,228 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:36:20,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 10:36:20,229 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:36:20,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:36:20,230 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:36:20,230 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:36:20,231 INFO L87 Difference]: Start difference. First operand 29480 states and 40152 transitions. Second operand 9 states. [2018-09-10 10:36:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:36:32,083 INFO L93 Difference]: Finished difference Result 69807 states and 104965 transitions. [2018-09-10 10:36:32,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 10:36:32,084 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1080 [2018-09-10 10:36:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:36:32,276 INFO L225 Difference]: With dead ends: 69807 [2018-09-10 10:36:32,276 INFO L226 Difference]: Without dead ends: 40333 [2018-09-10 10:36:32,354 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4340 GetRequests, 4318 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2018-09-10 10:36:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40333 states. [2018-09-10 10:36:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40333 to 39581. [2018-09-10 10:36:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39581 states. [2018-09-10 10:36:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39581 states to 39581 states and 55194 transitions. [2018-09-10 10:36:33,394 INFO L78 Accepts]: Start accepts. Automaton has 39581 states and 55194 transitions. Word has length 1080 [2018-09-10 10:36:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:36:33,394 INFO L480 AbstractCegarLoop]: Abstraction has 39581 states and 55194 transitions. [2018-09-10 10:36:33,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:36:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 39581 states and 55194 transitions. [2018-09-10 10:36:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-09-10 10:36:33,549 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:36:33,550 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:36:33,550 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:36:33,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1241251529, now seen corresponding path program 1 times [2018-09-10 10:36:33,551 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:36:33,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:36:33,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:36:33,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:36:33,552 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:36:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:36:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 317 proven. 48 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:35,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:36:35,374 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:36:35,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:36:35,382 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:36:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:36:35,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:36:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:36,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:36:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 317 proven. 48 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:37,320 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:36:37,321 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:36:37,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:36:37,337 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:36:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:36:38,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:36:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:38,974 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:36:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 317 proven. 48 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 10:36:39,504 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:36:39,506 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-10 10:36:39,506 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:36:39,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:36:39,507 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:36:39,507 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-10 10:36:39,508 INFO L87 Difference]: Start difference. First operand 39581 states and 55194 transitions. Second operand 9 states. [2018-09-10 10:37:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:37:04,876 INFO L93 Difference]: Finished difference Result 151021 states and 242226 transitions. [2018-09-10 10:37:04,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-10 10:37:04,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1100 [2018-09-10 10:37:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:37:05,502 INFO L225 Difference]: With dead ends: 151021 [2018-09-10 10:37:05,502 INFO L226 Difference]: Without dead ends: 105576 [2018-09-10 10:37:05,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4468 GetRequests, 4421 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=417, Invalid=1745, Unknown=0, NotChecked=0, Total=2162 [2018-09-10 10:37:05,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105576 states. [2018-09-10 10:37:08,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105576 to 103317. [2018-09-10 10:37:08,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103317 states. [2018-09-10 10:37:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103317 states to 103317 states and 134402 transitions. [2018-09-10 10:37:09,308 INFO L78 Accepts]: Start accepts. Automaton has 103317 states and 134402 transitions. Word has length 1100 [2018-09-10 10:37:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:37:09,308 INFO L480 AbstractCegarLoop]: Abstraction has 103317 states and 134402 transitions. [2018-09-10 10:37:09,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:37:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 103317 states and 134402 transitions. [2018-09-10 10:37:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2018-09-10 10:37:09,695 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:37:09,696 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:37:09,696 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:37:09,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2067312143, now seen corresponding path program 1 times [2018-09-10 10:37:09,698 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:37:09,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:09,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:09,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:09,699 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:37:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 556 proven. 310 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-09-10 10:37:11,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:37:11,908 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:37:11,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:11,917 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:37:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:12,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:37:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 637 proven. 2 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-09-10 10:37:13,534 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:37:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 556 proven. 310 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-09-10 10:37:14,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:37:14,801 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:37:14,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:14,822 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:37:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:16,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:37:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 637 proven. 2 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-09-10 10:37:17,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:37:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 556 proven. 310 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-09-10 10:37:18,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:37:18,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-10 10:37:18,291 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:37:18,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:37:18,293 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:37:18,295 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:37:18,300 INFO L87 Difference]: Start difference. First operand 103317 states and 134402 transitions. Second operand 9 states. [2018-09-10 10:37:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:37:36,127 INFO L93 Difference]: Finished difference Result 240211 states and 323320 transitions. [2018-09-10 10:37:36,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-10 10:37:36,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1346 [2018-09-10 10:37:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:37:36,780 INFO L225 Difference]: With dead ends: 240211 [2018-09-10 10:37:36,780 INFO L226 Difference]: Without dead ends: 118162 [2018-09-10 10:37:37,044 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5438 GetRequests, 5398 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2018-09-10 10:37:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118162 states. [2018-09-10 10:37:39,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118162 to 107396. [2018-09-10 10:37:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107396 states. [2018-09-10 10:37:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107396 states to 107396 states and 119139 transitions. [2018-09-10 10:37:39,651 INFO L78 Accepts]: Start accepts. Automaton has 107396 states and 119139 transitions. Word has length 1346 [2018-09-10 10:37:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:37:39,651 INFO L480 AbstractCegarLoop]: Abstraction has 107396 states and 119139 transitions. [2018-09-10 10:37:39,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:37:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 107396 states and 119139 transitions. [2018-09-10 10:37:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1406 [2018-09-10 10:37:39,795 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:37:39,796 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:37:39,797 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:37:39,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1437098532, now seen corresponding path program 1 times [2018-09-10 10:37:39,797 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:37:39,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:39,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:39,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:39,798 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:37:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 592 proven. 103 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-10 10:37:41,851 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:37:41,851 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:37:41,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:41,858 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:37:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:42,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:37:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 695 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 10:37:43,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:37:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 695 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 10:37:45,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:37:45,050 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:37:45,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:45,066 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:37:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:46,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:37:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 695 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 10:37:47,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:37:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 695 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 10:37:48,787 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:37:48,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-10 10:37:48,789 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:37:48,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:37:48,791 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:37:48,791 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-10 10:37:48,791 INFO L87 Difference]: Start difference. First operand 107396 states and 119139 transitions. Second operand 9 states. [2018-09-10 10:38:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:38:02,831 INFO L93 Difference]: Finished difference Result 268215 states and 306788 transitions. [2018-09-10 10:38:02,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-10 10:38:02,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1405 [2018-09-10 10:38:02,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:38:02,832 INFO L225 Difference]: With dead ends: 268215 [2018-09-10 10:38:02,832 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 10:38:03,148 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5673 GetRequests, 5632 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2018-09-10 10:38:03,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 10:38:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 10:38:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 10:38:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 10:38:03,151 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1405 [2018-09-10 10:38:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:38:03,151 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 10:38:03,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:38:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 10:38:03,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 10:38:03,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 10:38:08,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,279 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,282 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,508 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,508 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,509 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,612 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,757 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:08,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,182 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,400 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,525 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,526 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,526 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,534 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,535 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,549 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:09,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,132 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,488 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,551 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,552 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,807 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:10,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,169 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,348 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,376 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,669 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:11,958 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,424 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,577 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,816 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:38:12,820 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-09-10 10:38:12,990 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-10 10:38:12,992 INFO L168 Benchmark]: Toolchain (without parser) took 213047.23 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-10 10:38:12,993 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 10:38:12,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2703.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-09-10 10:38:12,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:38:12,997 INFO L168 Benchmark]: Boogie Preprocessor took 629.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 824.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2018-09-10 10:38:12,998 INFO L168 Benchmark]: RCFGBuilder took 12498.05 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 174.6 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -71.4 MB). Peak memory consumption was 711.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:38:13,000 INFO L168 Benchmark]: TraceAbstraction took 197074.93 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -645.6 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-10 10:38:13,007 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2703.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 134.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 629.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 824.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12498.05 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 174.6 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -71.4 MB). Peak memory consumption was 711.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197074.93 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -645.6 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4796]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 3017. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-38-13-028.csv Completed graceful shutdown