java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label11_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:55:41,815 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:55:41,817 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:55:41,835 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:55:41,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:55:41,837 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:55:41,839 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:55:41,841 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:55:41,843 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:55:41,843 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:55:41,844 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:55:41,845 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:55:41,846 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:55:41,846 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:55:41,848 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:55:41,848 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:55:41,849 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:55:41,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:55:41,853 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:55:41,855 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:55:41,856 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:55:41,858 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:55:41,860 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:55:41,861 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:55:41,861 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:55:41,864 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:55:41,866 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:55:41,869 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:55:41,870 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:55:41,871 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:55:41,874 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:55:41,875 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:55:41,875 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:55:41,876 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:55:41,879 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:55:41,879 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:55:41,880 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 [2018-07-24 11:55:41,907 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:55:41,907 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:55:41,908 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:55:41,908 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:55:41,909 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:55:41,910 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:55:41,910 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:55:41,910 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:55:41,910 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:55:41,910 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:55:41,911 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:55:41,911 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:55:41,912 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:55:41,912 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:55:41,912 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:55:41,912 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:55:41,912 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:55:41,912 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:55:41,913 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:55:41,913 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:55:41,913 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:55:41,913 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:55:41,913 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:55:41,914 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:55:41,914 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:55:41,914 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:55:41,914 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:55:41,914 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:55:41,915 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:55:41,915 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:55:41,915 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:55:41,915 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:55:41,915 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:55:41,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:55:41,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:55:41,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:55:41,987 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:55:41,987 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:55:41,988 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label11_false-unreach-call.c [2018-07-24 11:55:42,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb30442e/e97a6d5deea64c068bcba83893e461e7/FLAGd2d1202af [2018-07-24 11:55:42,812 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:55:42,813 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label11_false-unreach-call.c [2018-07-24 11:55:42,850 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb30442e/e97a6d5deea64c068bcba83893e461e7/FLAGd2d1202af [2018-07-24 11:55:42,873 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb30442e/e97a6d5deea64c068bcba83893e461e7 [2018-07-24 11:55:42,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:55:42,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:55:42,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:55:42,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:55:42,899 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:55:42,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:55:42" (1/1) ... [2018-07-24 11:55:42,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34eea00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:42, skipping insertion in model container [2018-07-24 11:55:42,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:55:42" (1/1) ... [2018-07-24 11:55:43,322 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:55:44,505 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:55:44,525 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:55:45,880 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:55:46,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46 WrapperNode [2018-07-24 11:55:46,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:55:46,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:55:46,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:55:46,296 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:55:46,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:46,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:46,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:55:46,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:55:46,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:55:46,633 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:55:47,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:47,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:47,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:47,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:47,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:47,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:47,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... [2018-07-24 11:55:47,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:55:47,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:55:47,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:55:47,930 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:55:47,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:55:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:55:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:55:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:55:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:55:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:55:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:55:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:55:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:55:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:55:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:55:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:55:48,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:55:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:55:48,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:56:02,082 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:56:02,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:56:02 BoogieIcfgContainer [2018-07-24 11:56:02,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:56:02,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:56:02,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:56:02,087 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:56:02,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:55:42" (1/3) ... [2018-07-24 11:56:02,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1e35ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:56:02, skipping insertion in model container [2018-07-24 11:56:02,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:46" (2/3) ... [2018-07-24 11:56:02,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1e35ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:56:02, skipping insertion in model container [2018-07-24 11:56:02,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:56:02" (3/3) ... [2018-07-24 11:56:02,091 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label11_false-unreach-call.c [2018-07-24 11:56:02,100 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:56:02,108 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:56:02,165 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:56:02,166 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:56:02,166 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:56:02,166 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:56:02,167 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:56:02,167 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:56:02,167 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:56:02,167 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:56:02,167 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:56:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 11:56:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-24 11:56:02,215 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:02,217 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:02,217 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:02,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1603601107, now seen corresponding path program 1 times [2018-07-24 11:56:02,225 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:02,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:02,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:02,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:02,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:02,688 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:02,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:56:02,688 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:02,697 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:56:02,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:56:02,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:56:02,716 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-07-24 11:56:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:16,966 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-07-24 11:56:16,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:56:16,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-07-24 11:56:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:17,033 INFO L225 Difference]: With dead ends: 3968 [2018-07-24 11:56:17,033 INFO L226 Difference]: Without dead ends: 2842 [2018-07-24 11:56:17,048 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:56:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-07-24 11:56:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-07-24 11:56:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-07-24 11:56:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-07-24 11:56:17,239 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 33 [2018-07-24 11:56:17,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:17,240 INFO L471 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-07-24 11:56:17,240 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:56:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-07-24 11:56:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-24 11:56:17,246 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:17,247 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:17,247 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:17,247 INFO L82 PathProgramCache]: Analyzing trace with hash 918373462, now seen corresponding path program 1 times [2018-07-24 11:56:17,248 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:17,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:17,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:17,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:17,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:17,570 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:17,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:56:17,571 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:17,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:56:17,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:56:17,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:56:17,573 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-07-24 11:56:31,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:31,657 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-07-24 11:56:31,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:56:31,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2018-07-24 11:56:31,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:31,684 INFO L225 Difference]: With dead ends: 5673 [2018-07-24 11:56:31,684 INFO L226 Difference]: Without dead ends: 3698 [2018-07-24 11:56:31,691 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:56:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-07-24 11:56:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-07-24 11:56:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-07-24 11:56:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-07-24 11:56:31,807 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 103 [2018-07-24 11:56:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:31,808 INFO L471 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-07-24 11:56:31,808 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:56:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-07-24 11:56:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-24 11:56:31,811 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:31,812 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:31,812 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:31,812 INFO L82 PathProgramCache]: Analyzing trace with hash 899942778, now seen corresponding path program 1 times [2018-07-24 11:56:31,812 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:31,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:31,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:31,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:31,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:32,103 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:32,103 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:56:32,104 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:32,104 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:56:32,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:56:32,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:56:32,105 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-07-24 11:56:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:44,924 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-07-24 11:56:44,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:56:44,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-07-24 11:56:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:44,969 INFO L225 Difference]: With dead ends: 10963 [2018-07-24 11:56:44,969 INFO L226 Difference]: Without dead ends: 7282 [2018-07-24 11:56:44,982 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:56:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-07-24 11:56:45,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-07-24 11:56:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-07-24 11:56:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-07-24 11:56:45,176 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 105 [2018-07-24 11:56:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:45,177 INFO L471 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-07-24 11:56:45,177 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:56:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-07-24 11:56:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-07-24 11:56:45,181 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:45,181 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:45,182 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1197118350, now seen corresponding path program 1 times [2018-07-24 11:56:45,182 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:45,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:45,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:45,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:45,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:45,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:45,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:56:45,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:45,356 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:56:45,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:56:45,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:56:45,357 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 4 states. [2018-07-24 11:56:57,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:57,388 INFO L93 Difference]: Finished difference Result 27677 states and 43224 transitions. [2018-07-24 11:56:57,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:56:57,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-07-24 11:56:57,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:57,476 INFO L225 Difference]: With dead ends: 27677 [2018-07-24 11:56:57,476 INFO L226 Difference]: Without dead ends: 20508 [2018-07-24 11:56:57,523 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:56:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2018-07-24 11:56:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 20471. [2018-07-24 11:56:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20471 states. [2018-07-24 11:56:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20471 states to 20471 states and 29107 transitions. [2018-07-24 11:56:58,015 INFO L78 Accepts]: Start accepts. Automaton has 20471 states and 29107 transitions. Word has length 149 [2018-07-24 11:56:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:58,016 INFO L471 AbstractCegarLoop]: Abstraction has 20471 states and 29107 transitions. [2018-07-24 11:56:58,016 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:56:58,016 INFO L276 IsEmpty]: Start isEmpty. Operand 20471 states and 29107 transitions. [2018-07-24 11:56:58,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-24 11:56:58,024 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:58,025 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:56:58,025 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:58,025 INFO L82 PathProgramCache]: Analyzing trace with hash -790431567, now seen corresponding path program 1 times [2018-07-24 11:56:58,026 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:58,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:58,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:58,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:58,027 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:58,418 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:56:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:58,977 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:56:58,977 INFO L191 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 [2018-07-24 11:56:58,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:58,993 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:56:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:59,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:56:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-07-24 11:56:59,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:56:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-07-24 11:56:59,948 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:56:59,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-07-24 11:56:59,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:59,949 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:56:59,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:56:59,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:56:59,951 INFO L87 Difference]: Start difference. First operand 20471 states and 29107 transitions. Second operand 3 states. [2018-07-24 11:57:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:09,376 INFO L93 Difference]: Finished difference Result 50722 states and 73144 transitions. [2018-07-24 11:57:09,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:57:09,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2018-07-24 11:57:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:09,529 INFO L225 Difference]: With dead ends: 50722 [2018-07-24 11:57:09,529 INFO L226 Difference]: Without dead ends: 30257 [2018-07-24 11:57:09,612 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:57:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30257 states. [2018-07-24 11:57:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30257 to 30257. [2018-07-24 11:57:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30257 states. [2018-07-24 11:57:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30257 states to 30257 states and 41082 transitions. [2018-07-24 11:57:10,543 INFO L78 Accepts]: Start accepts. Automaton has 30257 states and 41082 transitions. Word has length 264 [2018-07-24 11:57:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:10,543 INFO L471 AbstractCegarLoop]: Abstraction has 30257 states and 41082 transitions. [2018-07-24 11:57:10,543 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:57:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 30257 states and 41082 transitions. [2018-07-24 11:57:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-24 11:57:10,552 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:10,552 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:57:10,553 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:10,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1494710536, now seen corresponding path program 1 times [2018-07-24 11:57:10,553 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:10,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:10,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:10,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:10,554 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 140 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:57:11,000 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:11,000 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:57:11,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:11,011 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:11,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 11:57:11,328 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 11:57:11,565 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:57:11,566 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-07-24 11:57:11,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:57:11,566 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:57:11,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:57:11,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:57:11,567 INFO L87 Difference]: Start difference. First operand 30257 states and 41082 transitions. Second operand 3 states. [2018-07-24 11:57:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:17,655 INFO L93 Difference]: Finished difference Result 65358 states and 88983 transitions. [2018-07-24 11:57:17,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:57:17,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2018-07-24 11:57:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:17,761 INFO L225 Difference]: With dead ends: 65358 [2018-07-24 11:57:17,762 INFO L226 Difference]: Without dead ends: 35107 [2018-07-24 11:57:17,819 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 546 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:57:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35107 states. [2018-07-24 11:57:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35107 to 34302. [2018-07-24 11:57:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34302 states. [2018-07-24 11:57:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34302 states to 34302 states and 42874 transitions. [2018-07-24 11:57:18,634 INFO L78 Accepts]: Start accepts. Automaton has 34302 states and 42874 transitions. Word has length 273 [2018-07-24 11:57:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:18,635 INFO L471 AbstractCegarLoop]: Abstraction has 34302 states and 42874 transitions. [2018-07-24 11:57:18,635 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:57:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 34302 states and 42874 transitions. [2018-07-24 11:57:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-24 11:57:18,659 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:18,660 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:57:18,660 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:18,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1356023129, now seen corresponding path program 1 times [2018-07-24 11:57:18,660 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:18,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:18,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:18,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:18,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:19,050 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:57:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:19,580 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:19,580 INFO L191 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 [2018-07-24 11:57:19,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:19,598 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:19,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:20,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:20,566 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:20,566 INFO L191 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 [2018-07-24 11:57:20,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:20,588 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:20,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:21,165 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:21,526 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:57:21,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 11:57:21,527 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:57:21,528 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:57:21,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:57:21,529 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:57:21,529 INFO L87 Difference]: Start difference. First operand 34302 states and 42874 transitions. Second operand 9 states. [2018-07-24 11:57:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:42,193 INFO L93 Difference]: Finished difference Result 100523 states and 136522 transitions. [2018-07-24 11:57:42,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-24 11:57:42,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 375 [2018-07-24 11:57:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:42,409 INFO L225 Difference]: With dead ends: 100523 [2018-07-24 11:57:42,410 INFO L226 Difference]: Without dead ends: 66227 [2018-07-24 11:57:42,498 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1535 GetRequests, 1499 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=283, Invalid=977, Unknown=0, NotChecked=0, Total=1260 [2018-07-24 11:57:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66227 states. [2018-07-24 11:57:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66227 to 62481. [2018-07-24 11:57:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62481 states. [2018-07-24 11:57:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62481 states to 62481 states and 75386 transitions. [2018-07-24 11:57:43,506 INFO L78 Accepts]: Start accepts. Automaton has 62481 states and 75386 transitions. Word has length 375 [2018-07-24 11:57:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:43,507 INFO L471 AbstractCegarLoop]: Abstraction has 62481 states and 75386 transitions. [2018-07-24 11:57:43,507 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:57:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 62481 states and 75386 transitions. [2018-07-24 11:57:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-07-24 11:57:43,532 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:43,532 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:57:43,532 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:43,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1138768895, now seen corresponding path program 1 times [2018-07-24 11:57:43,533 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:43,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:43,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:43,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:43,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:57:44,768 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:44,768 INFO L191 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 [2018-07-24 11:57:44,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:44,777 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:44,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:57:45,112 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:57:45,361 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:45,361 INFO L191 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 [2018-07-24 11:57:45,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:45,378 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:45,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:57:45,858 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:57:46,068 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:57:46,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:57:46,068 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:57:46,071 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:57:46,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:57:46,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:57:46,071 INFO L87 Difference]: Start difference. First operand 62481 states and 75386 transitions. Second operand 9 states. [2018-07-24 11:58:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:11,306 INFO L93 Difference]: Finished difference Result 174505 states and 240535 transitions. [2018-07-24 11:58:11,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-24 11:58:11,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 397 [2018-07-24 11:58:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:11,845 INFO L225 Difference]: With dead ends: 174505 [2018-07-24 11:58:11,845 INFO L226 Difference]: Without dead ends: 108733 [2018-07-24 11:58:12,063 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1622 GetRequests, 1594 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2018-07-24 11:58:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108733 states. [2018-07-24 11:58:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108733 to 106808. [2018-07-24 11:58:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106808 states. [2018-07-24 11:58:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106808 states to 106808 states and 129064 transitions. [2018-07-24 11:58:14,079 INFO L78 Accepts]: Start accepts. Automaton has 106808 states and 129064 transitions. Word has length 397 [2018-07-24 11:58:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:14,079 INFO L471 AbstractCegarLoop]: Abstraction has 106808 states and 129064 transitions. [2018-07-24 11:58:14,079 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:58:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 106808 states and 129064 transitions. [2018-07-24 11:58:14,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-07-24 11:58:14,110 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:14,111 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:58:14,111 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:14,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1007912279, now seen corresponding path program 1 times [2018-07-24 11:58:14,112 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:14,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:14,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:14,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:14,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 160 proven. 78 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 11:58:14,439 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:14,439 INFO L191 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 [2018-07-24 11:58:14,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:14,446 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:14,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-07-24 11:58:14,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-07-24 11:58:15,395 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:58:15,395 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-07-24 11:58:15,395 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:58:15,396 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:58:15,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:58:15,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:58:15,396 INFO L87 Difference]: Start difference. First operand 106808 states and 129064 transitions. Second operand 3 states. [2018-07-24 11:58:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:20,155 INFO L93 Difference]: Finished difference Result 211871 states and 256350 transitions. [2018-07-24 11:58:20,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:58:20,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 398 [2018-07-24 11:58:20,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:20,504 INFO L225 Difference]: With dead ends: 211871 [2018-07-24 11:58:20,504 INFO L226 Difference]: Without dead ends: 105943 [2018-07-24 11:58:20,706 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:58:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105943 states. [2018-07-24 11:58:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105943 to 105943. [2018-07-24 11:58:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105943 states. [2018-07-24 11:58:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105943 states to 105943 states and 127953 transitions. [2018-07-24 11:58:23,303 INFO L78 Accepts]: Start accepts. Automaton has 105943 states and 127953 transitions. Word has length 398 [2018-07-24 11:58:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:23,304 INFO L471 AbstractCegarLoop]: Abstraction has 105943 states and 127953 transitions. [2018-07-24 11:58:23,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:58:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 105943 states and 127953 transitions. [2018-07-24 11:58:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-07-24 11:58:23,367 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:23,368 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-07-24 11:58:23,368 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:23,369 INFO L82 PathProgramCache]: Analyzing trace with hash 30788852, now seen corresponding path program 1 times [2018-07-24 11:58:23,369 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:23,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:23,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:23,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:23,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 206 proven. 207 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-07-24 11:58:24,118 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:24,118 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:58:24,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:24,137 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:24,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 541 proven. 2 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-07-24 11:58:24,473 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 206 proven. 207 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-07-24 11:58:24,696 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:24,696 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:58:24,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:24,712 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:25,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 541 proven. 2 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-07-24 11:58:25,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 206 proven. 207 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-07-24 11:58:26,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:58:26,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 11:58:26,191 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:58:26,193 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:58:26,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:58:26,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:58:26,194 INFO L87 Difference]: Start difference. First operand 105943 states and 127953 transitions. Second operand 9 states. [2018-07-24 11:58:28,318 WARN L169 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-07-24 11:58:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:49,356 INFO L93 Difference]: Finished difference Result 209005 states and 265000 transitions. [2018-07-24 11:58:49,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-24 11:58:49,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 491 [2018-07-24 11:58:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:49,666 INFO L225 Difference]: With dead ends: 209005 [2018-07-24 11:58:49,666 INFO L226 Difference]: Without dead ends: 101435 [2018-07-24 11:58:49,868 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1994 GetRequests, 1968 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-07-24 11:58:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101435 states. [2018-07-24 11:58:51,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101435 to 98488. [2018-07-24 11:58:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98488 states. [2018-07-24 11:58:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98488 states to 98488 states and 111546 transitions. [2018-07-24 11:58:52,033 INFO L78 Accepts]: Start accepts. Automaton has 98488 states and 111546 transitions. Word has length 491 [2018-07-24 11:58:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:52,033 INFO L471 AbstractCegarLoop]: Abstraction has 98488 states and 111546 transitions. [2018-07-24 11:58:52,033 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:58:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 98488 states and 111546 transitions. [2018-07-24 11:58:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-07-24 11:58:52,053 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:52,054 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:58:52,054 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:52,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1234426656, now seen corresponding path program 1 times [2018-07-24 11:58:52,055 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:52,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:52,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:52,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:52,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-07-24 11:58:52,864 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:52,864 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:58:52,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:52,880 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:53,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-07-24 11:58:53,416 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:53,615 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2018-07-24 11:58:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 78 proven. 286 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-07-24 11:58:54,805 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:58:54,806 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:58:54,806 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:58:54,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:58:54,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:58:54,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:58:54,807 INFO L87 Difference]: Start difference. First operand 98488 states and 111546 transitions. Second operand 5 states. [2018-07-24 11:59:12,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:59:12,450 INFO L93 Difference]: Finished difference Result 211568 states and 238953 transitions. [2018-07-24 11:59:12,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:59:12,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 500 [2018-07-24 11:59:12,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:59:12,672 INFO L225 Difference]: With dead ends: 211568 [2018-07-24 11:59:12,672 INFO L226 Difference]: Without dead ends: 113091 [2018-07-24 11:59:12,757 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 996 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:59:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113091 states. [2018-07-24 11:59:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113091 to 103771. [2018-07-24 11:59:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103771 states. [2018-07-24 11:59:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103771 states to 103771 states and 117237 transitions. [2018-07-24 11:59:13,902 INFO L78 Accepts]: Start accepts. Automaton has 103771 states and 117237 transitions. Word has length 500 [2018-07-24 11:59:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:59:13,903 INFO L471 AbstractCegarLoop]: Abstraction has 103771 states and 117237 transitions. [2018-07-24 11:59:13,903 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:59:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 103771 states and 117237 transitions. [2018-07-24 11:59:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-07-24 11:59:13,928 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:59:13,929 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:59:13,929 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:59:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1835212304, now seen corresponding path program 1 times [2018-07-24 11:59:13,929 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:59:13,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:13,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:13,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:13,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:59:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 317 proven. 142 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 11:59:15,145 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:59:15,145 INFO L191 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 [2018-07-24 11:59:15,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:15,152 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:59:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:15,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:59:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 625 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-07-24 11:59:15,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:59:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 317 proven. 142 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 11:59:15,791 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:59:15,791 INFO L191 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 [2018-07-24 11:59:15,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:15,807 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:59:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:16,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:59:16,521 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-07-24 11:59:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 453 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-07-24 11:59:16,828 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:59:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 453 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-07-24 11:59:17,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:59:17,573 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:59:17,573 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:59:17,574 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:59:17,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:59:17,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:59:17,575 INFO L87 Difference]: Start difference. First operand 103771 states and 117237 transitions. Second operand 6 states. Received shutdown request... [2018-07-24 11:59:30,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:59:30,824 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:59:30,829 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:59:30,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:59:30 BoogieIcfgContainer [2018-07-24 11:59:30,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:59:30,830 INFO L168 Benchmark]: Toolchain (without parser) took 227944.25 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -873.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-24 11:59:30,831 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:59:30,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3405.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 341.9 MB). Peak memory consumption was 341.9 MB. Max. memory is 7.1 GB. [2018-07-24 11:59:30,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 336.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 11:59:30,833 INFO L168 Benchmark]: Boogie Preprocessor took 1296.89 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 979.4 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 11:59:30,834 INFO L168 Benchmark]: RCFGBuilder took 14153.50 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 152.6 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 106.6 MB). Peak memory consumption was 735.5 MB. Max. memory is 7.1 GB. [2018-07-24 11:59:30,835 INFO L168 Benchmark]: TraceAbstraction took 208745.82 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -67.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 11:59:30,841 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3405.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 341.9 MB). Peak memory consumption was 341.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 336.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1296.89 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 979.4 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14153.50 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 152.6 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 106.6 MB). Peak memory consumption was 735.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208745.82 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -67.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (103771states) and interpolant automaton (currently 8 states, 6 states before enhancement), while ReachableStatesComputation was computing reachable states (175864 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 176.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7659 SDtfs, 47215 SDslu, 6732 SDs, 0 SdLazy, 88980 SolverSat, 18053 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 141.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10207 GetRequests, 10054 SyntacticMatches, 16 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106808occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 19759 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 8642 NumberOfCodeBlocks, 8642 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 13629 ConstructedInterpolants, 7 QuantifiedInterpolants, 14614101 SizeOfPredicates, 17 NumberOfNonLiveVariables, 8204 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 36 InterpolantComputations, 10 PerfectInterpolantSequences, 12333/13662 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label11_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-59-30-855.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label11_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-59-30-855.csv Completed graceful shutdown