java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:57:28,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:57:28,739 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:57:28,751 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:57:28,752 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:57:28,753 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:57:28,754 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:57:28,756 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:57:28,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:57:28,759 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:57:28,760 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:57:28,760 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:57:28,761 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:57:28,762 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:57:28,763 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:57:28,764 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:57:28,765 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:57:28,767 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:57:28,769 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:57:28,771 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:57:28,772 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:57:28,773 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:57:28,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:57:28,776 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:57:28,776 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:57:28,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:57:28,781 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:57:28,782 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:57:28,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:57:28,786 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:57:28,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:57:28,787 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:57:28,787 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:57:28,787 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:57:28,788 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:57:28,789 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:57:28,789 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:57:28,816 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:57:28,816 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:57:28,817 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:57:28,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:57:28,823 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:57:28,823 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:57:28,823 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:57:28,823 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:57:28,824 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:57:28,824 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:57:28,824 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:57:28,826 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:57:28,826 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:57:28,826 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:57:28,827 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:57:28,827 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:57:28,827 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:57:28,827 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:57:28,829 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:57:28,830 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:57:28,830 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:57:28,830 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:57:28,830 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:57:28,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:57:28,831 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:57:28,831 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:57:28,831 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:57:28,831 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:57:28,831 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:57:28,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:57:28,832 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:57:28,832 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:57:28,832 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:57:28,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:57:28,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:57:28,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:57:28,931 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:57:28,931 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:57:28,932 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-09-10 11:57:29,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f5b8032/2c9dbf4789524cbfb8363502c4f58a6c/FLAG2248347b7 [2018-09-10 11:57:29,764 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:57:29,764 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-09-10 11:57:29,800 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f5b8032/2c9dbf4789524cbfb8363502c4f58a6c/FLAG2248347b7 [2018-09-10 11:57:29,817 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f5b8032/2c9dbf4789524cbfb8363502c4f58a6c [2018-09-10 11:57:29,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:57:29,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:57:29,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:57:29,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:57:29,841 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:57:29,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:57:29" (1/1) ... [2018-09-10 11:57:29,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a40121c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:29, skipping insertion in model container [2018-09-10 11:57:29,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:57:29" (1/1) ... [2018-09-10 11:57:30,260 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:57:31,467 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:57:31,495 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:57:32,407 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:57:32,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32 WrapperNode [2018-09-10 11:57:32,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:57:32,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:57:32,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:57:32,759 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:57:32,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:32,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:33,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:57:33,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:57:33,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:57:33,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:57:33,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:33,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:33,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:33,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:34,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:34,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:34,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... [2018-09-10 11:57:34,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:57:34,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:57:34,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:57:34,296 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:57:34,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:57:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:57:34,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:57:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:57:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:57:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:57:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:57:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:57:34,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:57:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:57:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:57:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:57:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:57:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:57:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:57:49,929 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:57:49,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:57:49 BoogieIcfgContainer [2018-09-10 11:57:49,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:57:49,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:57:49,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:57:49,935 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:57:49,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:57:29" (1/3) ... [2018-09-10 11:57:49,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d007da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:57:49, skipping insertion in model container [2018-09-10 11:57:49,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:57:32" (2/3) ... [2018-09-10 11:57:49,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d007da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:57:49, skipping insertion in model container [2018-09-10 11:57:49,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:57:49" (3/3) ... [2018-09-10 11:57:49,939 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label42_true-unreach-call.c [2018-09-10 11:57:49,949 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:57:49,959 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:57:50,022 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:57:50,023 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:57:50,023 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:57:50,023 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:57:50,023 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:57:50,023 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:57:50,023 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:57:50,023 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:57:50,024 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:57:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:57:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-10 11:57:50,087 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:50,088 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:57:50,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:57:50,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1552878732, now seen corresponding path program 1 times [2018-09-10 11:57:50,096 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:50,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:50,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:50,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:50,152 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:50,716 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:57:50,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:57:50,716 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:50,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:57:50,737 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:57:50,737 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:57:50,740 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-10 11:58:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:10,849 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-09-10 11:58:10,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:58:10,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-09-10 11:58:10,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:10,905 INFO L225 Difference]: With dead ends: 4105 [2018-09-10 11:58:10,905 INFO L226 Difference]: Without dead ends: 2979 [2018-09-10 11:58:10,921 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:58:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-09-10 11:58:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-09-10 11:58:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-09-10 11:58:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-09-10 11:58:11,113 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 72 [2018-09-10 11:58:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:11,114 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-09-10 11:58:11,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:58:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-09-10 11:58:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-10 11:58:11,128 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:11,129 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:11,129 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:11,133 INFO L82 PathProgramCache]: Analyzing trace with hash -588115633, now seen corresponding path program 1 times [2018-09-10 11:58:11,133 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:11,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:11,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:11,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:11,136 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:11,445 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:11,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:58:11,446 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:11,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:58:11,448 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:58:11,449 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:58:11,449 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-09-10 11:58:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:29,805 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-09-10 11:58:29,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:58:29,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-10 11:58:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:29,856 INFO L225 Difference]: With dead ends: 10635 [2018-09-10 11:58:29,856 INFO L226 Difference]: Without dead ends: 7792 [2018-09-10 11:58:29,875 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:58:29,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-09-10 11:58:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-09-10 11:58:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-09-10 11:58:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-09-10 11:58:30,107 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 143 [2018-09-10 11:58:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:30,108 INFO L480 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-09-10 11:58:30,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:58:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-09-10 11:58:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-10 11:58:30,114 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:30,115 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:30,115 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:30,115 INFO L82 PathProgramCache]: Analyzing trace with hash 244898816, now seen corresponding path program 1 times [2018-09-10 11:58:30,117 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:30,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:30,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:30,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:30,119 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:30,426 WARN L175 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:58:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:30,605 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:30,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:58:30,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:30,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:58:30,606 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:58:30,606 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:58:30,607 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-09-10 11:58:45,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:45,676 INFO L93 Difference]: Finished difference Result 25316 states and 42417 transitions. [2018-09-10 11:58:45,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:58:45,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-09-10 11:58:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:45,776 INFO L225 Difference]: With dead ends: 25316 [2018-09-10 11:58:45,776 INFO L226 Difference]: Without dead ends: 17593 [2018-09-10 11:58:45,826 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:58:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17593 states. [2018-09-10 11:58:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17593 to 17518. [2018-09-10 11:58:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17518 states. [2018-09-10 11:58:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17518 states to 17518 states and 26075 transitions. [2018-09-10 11:58:46,276 INFO L78 Accepts]: Start accepts. Automaton has 17518 states and 26075 transitions. Word has length 146 [2018-09-10 11:58:46,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:46,277 INFO L480 AbstractCegarLoop]: Abstraction has 17518 states and 26075 transitions. [2018-09-10 11:58:46,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:58:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 17518 states and 26075 transitions. [2018-09-10 11:58:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-10 11:58:46,288 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:46,289 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:46,289 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2024237781, now seen corresponding path program 1 times [2018-09-10 11:58:46,290 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:46,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:46,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:46,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:46,291 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:46,627 WARN L175 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:58:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:47,041 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:47,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:58:47,041 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:47,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:58:47,042 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:58:47,042 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:58:47,043 INFO L87 Difference]: Start difference. First operand 17518 states and 26075 transitions. Second operand 6 states. [2018-09-10 11:58:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:59,044 INFO L93 Difference]: Finished difference Result 45753 states and 75639 transitions. [2018-09-10 11:58:59,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:58:59,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2018-09-10 11:58:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:59,174 INFO L225 Difference]: With dead ends: 45753 [2018-09-10 11:58:59,174 INFO L226 Difference]: Without dead ends: 28241 [2018-09-10 11:58:59,229 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:58:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28241 states. [2018-09-10 11:58:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28241 to 28077. [2018-09-10 11:58:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28077 states. [2018-09-10 11:58:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28077 states to 28077 states and 42424 transitions. [2018-09-10 11:58:59,966 INFO L78 Accepts]: Start accepts. Automaton has 28077 states and 42424 transitions. Word has length 210 [2018-09-10 11:58:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:59,967 INFO L480 AbstractCegarLoop]: Abstraction has 28077 states and 42424 transitions. [2018-09-10 11:58:59,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:58:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 28077 states and 42424 transitions. [2018-09-10 11:58:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-10 11:58:59,986 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:59,987 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:59,987 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:59,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1197741896, now seen corresponding path program 1 times [2018-09-10 11:58:59,988 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:59,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:59,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:59,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:59,989 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:59:00,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:00,488 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:59:00,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:00,508 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:00,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-10 11:59:01,131 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:59:02,118 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:59:02,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-10 11:59:02,119 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:02,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:02,120 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:02,121 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:59:02,121 INFO L87 Difference]: Start difference. First operand 28077 states and 42424 transitions. Second operand 5 states. [2018-09-10 11:59:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:18,583 INFO L93 Difference]: Finished difference Result 81485 states and 137105 transitions. [2018-09-10 11:59:18,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:59:18,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2018-09-10 11:59:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:18,920 INFO L225 Difference]: With dead ends: 81485 [2018-09-10 11:59:18,920 INFO L226 Difference]: Without dead ends: 53414 [2018-09-10 11:59:18,999 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 466 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:59:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53414 states. [2018-09-10 11:59:20,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53414 to 53118. [2018-09-10 11:59:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53118 states. [2018-09-10 11:59:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53118 states to 53118 states and 80400 transitions. [2018-09-10 11:59:20,559 INFO L78 Accepts]: Start accepts. Automaton has 53118 states and 80400 transitions. Word has length 234 [2018-09-10 11:59:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:20,561 INFO L480 AbstractCegarLoop]: Abstraction has 53118 states and 80400 transitions. [2018-09-10 11:59:20,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:59:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 53118 states and 80400 transitions. [2018-09-10 11:59:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-09-10 11:59:20,591 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:20,592 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:20,592 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1010630079, now seen corresponding path program 1 times [2018-09-10 11:59:20,593 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:20,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:20,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:20,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:20,594 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:20,937 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:59:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:21,254 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:21,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:59:21,254 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:21,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:59:21,255 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:59:21,255 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:59:21,256 INFO L87 Difference]: Start difference. First operand 53118 states and 80400 transitions. Second operand 6 states. [2018-09-10 11:59:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:37,352 INFO L93 Difference]: Finished difference Result 133951 states and 218201 transitions. [2018-09-10 11:59:37,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:59:37,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 272 [2018-09-10 11:59:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:37,809 INFO L225 Difference]: With dead ends: 133951 [2018-09-10 11:59:37,810 INFO L226 Difference]: Without dead ends: 80839 [2018-09-10 11:59:38,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:59:38,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80839 states. [2018-09-10 11:59:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80839 to 80529. [2018-09-10 11:59:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80529 states. [2018-09-10 11:59:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80529 states to 80529 states and 121522 transitions. [2018-09-10 11:59:40,285 INFO L78 Accepts]: Start accepts. Automaton has 80529 states and 121522 transitions. Word has length 272 [2018-09-10 11:59:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:40,286 INFO L480 AbstractCegarLoop]: Abstraction has 80529 states and 121522 transitions. [2018-09-10 11:59:40,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:59:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 80529 states and 121522 transitions. [2018-09-10 11:59:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-09-10 11:59:40,314 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:40,315 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:40,315 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:40,315 INFO L82 PathProgramCache]: Analyzing trace with hash 456670910, now seen corresponding path program 1 times [2018-09-10 11:59:40,315 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:40,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:40,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:40,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:40,317 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 207 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:41,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:41,141 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:59:41,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:41,150 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:41,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:59:41,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:59:41,493 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:59:41,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2018-09-10 11:59:41,494 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:41,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:59:41,495 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:59:41,495 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:59:41,495 INFO L87 Difference]: Start difference. First operand 80529 states and 121522 transitions. Second operand 3 states. [2018-09-10 11:59:49,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:49,873 INFO L93 Difference]: Finished difference Result 186084 states and 289542 transitions. [2018-09-10 11:59:49,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:59:49,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2018-09-10 11:59:49,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:50,322 INFO L225 Difference]: With dead ends: 186084 [2018-09-10 11:59:50,322 INFO L226 Difference]: Without dead ends: 105561 [2018-09-10 11:59:50,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:59:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105561 states. [2018-09-10 11:59:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105561 to 104744. [2018-09-10 11:59:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104744 states. [2018-09-10 11:59:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104744 states to 104744 states and 146836 transitions. [2018-09-10 11:59:53,494 INFO L78 Accepts]: Start accepts. Automaton has 104744 states and 146836 transitions. Word has length 283 [2018-09-10 11:59:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:53,494 INFO L480 AbstractCegarLoop]: Abstraction has 104744 states and 146836 transitions. [2018-09-10 11:59:53,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:59:53,495 INFO L276 IsEmpty]: Start isEmpty. Operand 104744 states and 146836 transitions. [2018-09-10 11:59:53,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-09-10 11:59:53,569 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:53,569 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-10 11:59:53,569 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:53,570 INFO L82 PathProgramCache]: Analyzing trace with hash 265630841, now seen corresponding path program 1 times [2018-09-10 11:59:53,570 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:53,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:53,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:53,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:53,571 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 195 proven. 153 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-10 11:59:54,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:54,225 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:59:54,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:54,241 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:54,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-09-10 11:59:54,627 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:55,014 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 11:59:55,142 WARN L175 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-10 11:59:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 195 proven. 153 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-10 11:59:55,553 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:59:55,554 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-09-10 11:59:55,554 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:55,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:55,555 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:55,555 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:59:55,555 INFO L87 Difference]: Start difference. First operand 104744 states and 146836 transitions. Second operand 5 states. [2018-09-10 12:00:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:16,659 INFO L93 Difference]: Finished difference Result 252598 states and 353224 transitions. [2018-09-10 12:00:16,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:00:16,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2018-09-10 12:00:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:17,184 INFO L225 Difference]: With dead ends: 252598 [2018-09-10 12:00:17,185 INFO L226 Difference]: Without dead ends: 147860 [2018-09-10 12:00:17,479 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 709 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:00:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147860 states. [2018-09-10 12:00:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147860 to 147768. [2018-09-10 12:00:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147768 states. [2018-09-10 12:00:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147768 states to 147768 states and 195490 transitions. [2018-09-10 12:00:21,049 INFO L78 Accepts]: Start accepts. Automaton has 147768 states and 195490 transitions. Word has length 356 [2018-09-10 12:00:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:21,049 INFO L480 AbstractCegarLoop]: Abstraction has 147768 states and 195490 transitions. [2018-09-10 12:00:21,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:00:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 147768 states and 195490 transitions. [2018-09-10 12:00:21,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-09-10 12:00:21,115 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:21,116 INFO L376 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:00:21,116 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:21,116 INFO L82 PathProgramCache]: Analyzing trace with hash 109163525, now seen corresponding path program 1 times [2018-09-10 12:00:21,117 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:21,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:21,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:21,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:21,118 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-09-10 12:00:21,484 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:21,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:00:21,484 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:21,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:00:21,485 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:00:21,485 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:00:21,485 INFO L87 Difference]: Start difference. First operand 147768 states and 195490 transitions. Second operand 3 states. [2018-09-10 12:00:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:33,426 INFO L93 Difference]: Finished difference Result 300572 states and 420677 transitions. [2018-09-10 12:00:33,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:00:33,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 440 [2018-09-10 12:00:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:34,197 INFO L225 Difference]: With dead ends: 300572 [2018-09-10 12:00:34,197 INFO L226 Difference]: Without dead ends: 181659 [2018-09-10 12:00:34,551 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:00:34,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181659 states. [2018-09-10 12:00:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181659 to 180852. [2018-09-10 12:00:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180852 states. [2018-09-10 12:00:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180852 states to 180852 states and 241572 transitions. [2018-09-10 12:00:39,702 INFO L78 Accepts]: Start accepts. Automaton has 180852 states and 241572 transitions. Word has length 440 [2018-09-10 12:00:39,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:39,703 INFO L480 AbstractCegarLoop]: Abstraction has 180852 states and 241572 transitions. [2018-09-10 12:00:39,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:00:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 180852 states and 241572 transitions. [2018-09-10 12:00:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-10 12:00:39,759 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:39,759 INFO L376 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:00:39,759 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:39,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1856255035, now seen corresponding path program 1 times [2018-09-10 12:00:39,760 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:39,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:39,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:39,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:39,761 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:40,172 WARN L175 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:00:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 426 proven. 223 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 12:00:40,472 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:00:40,472 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:00:40,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:40,480 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:00:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:40,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:00:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-09-10 12:00:40,921 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:00:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-09-10 12:00:41,151 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:00:41,151 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-10 12:00:41,152 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:41,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:00:41,152 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:00:41,152 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:00:41,153 INFO L87 Difference]: Start difference. First operand 180852 states and 241572 transitions. Second operand 3 states. [2018-09-10 12:00:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:54,631 INFO L93 Difference]: Finished difference Result 363543 states and 491679 transitions. [2018-09-10 12:00:54,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:00:54,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 454 [2018-09-10 12:00:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:55,086 INFO L225 Difference]: With dead ends: 363543 [2018-09-10 12:00:55,086 INFO L226 Difference]: Without dead ends: 182697 [2018-09-10 12:00:55,331 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 909 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:00:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182697 states. [2018-09-10 12:00:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182697 to 179455. [2018-09-10 12:00:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179455 states. [2018-09-10 12:00:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179455 states to 179455 states and 226773 transitions. [2018-09-10 12:00:58,268 INFO L78 Accepts]: Start accepts. Automaton has 179455 states and 226773 transitions. Word has length 454 [2018-09-10 12:00:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:58,269 INFO L480 AbstractCegarLoop]: Abstraction has 179455 states and 226773 transitions. [2018-09-10 12:00:58,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:00:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 179455 states and 226773 transitions. [2018-09-10 12:00:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-09-10 12:00:58,320 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:58,320 INFO L376 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:00:58,320 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:58,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1921963026, now seen corresponding path program 1 times [2018-09-10 12:00:58,321 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:58,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:58,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:58,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:58,322 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-10 12:00:59,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:00:59,897 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:00:59,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:59,911 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:00,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-10 12:01:00,241 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-10 12:01:00,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:00,701 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:01:00,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:00,717 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:01,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-10 12:01:01,664 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-10 12:01:01,995 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:01:01,996 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:01:01,996 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:01:01,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:01:01,997 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:01:01,997 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:01:01,998 INFO L87 Difference]: Start difference. First operand 179455 states and 226773 transitions. Second operand 9 states. Received shutdown request... [2018-09-10 12:01:07,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-10 12:01:07,250 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:01:07,255 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:01:07,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:01:07 BoogieIcfgContainer [2018-09-10 12:01:07,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:01:07,257 INFO L168 Benchmark]: Toolchain (without parser) took 217427.12 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -923.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-10 12:01:07,258 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-10 12:01:07,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2924.28 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: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:01:07,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 337.13 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:01:07,260 INFO L168 Benchmark]: Boogie Preprocessor took 1199.59 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 184.9 MB. Max. memory is 7.1 GB. [2018-09-10 12:01:07,261 INFO L168 Benchmark]: RCFGBuilder took 15634.89 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 146.3 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 112.5 MB). Peak memory consumption was 741.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:01:07,262 INFO L168 Benchmark]: TraceAbstraction took 197324.58 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -87.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-10 12:01:07,266 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2924.28 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: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 337.13 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1199.59 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 184.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15634.89 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 146.3 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 112.5 MB). Peak memory consumption was 741.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197324.58 ms. Allocated memory was 2.7 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -87.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was constructing difference of abstraction (179455states) and FLOYD_HOARE automaton (currently 19 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (33559 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 197.2s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 163.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7927 SDtfs, 32555 SDslu, 4372 SDs, 0 SdLazy, 53768 SolverSat, 13561 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 130.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4669 GetRequests, 4563 SyntacticMatches, 19 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180852occurred in iteration=9, 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: 20.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 5996 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 5359 NumberOfCodeBlocks, 5359 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7611 ConstructedInterpolants, 0 QuantifiedInterpolants, 7655737 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3911 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 23 InterpolantComputations, 12 PerfectInterpolantSequences, 8667/9353 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_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-01-07-280.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-01-07-280.csv Completed graceful shutdown