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_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:56:01,924 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:56:01,926 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:56:01,938 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:56:01,938 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:56:01,939 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:56:01,940 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:56:01,942 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:56:01,944 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:56:01,945 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:56:01,946 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:56:01,946 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:56:01,947 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:56:01,948 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:56:01,949 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:56:01,950 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:56:01,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:56:01,952 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:56:01,954 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:56:01,956 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:56:01,957 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:56:01,958 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:56:01,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:56:01,961 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:56:01,961 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:56:01,962 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:56:01,963 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:56:01,964 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:56:01,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:56:01,966 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:56:01,966 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:56:01,967 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:56:01,967 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:56:01,967 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:56:01,968 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:56:01,969 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:56:01,970 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 11:56:01,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:56:01,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:56:01,986 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:56:01,986 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:56:01,986 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:56:01,986 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:56:01,986 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:56:01,987 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:56:01,987 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:56:01,987 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:56:01,987 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:56:01,988 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:56:01,988 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:56:01,988 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:56:01,988 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:56:01,989 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:56:01,989 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:56:01,989 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:56:01,989 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:56:01,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:56:01,990 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:56:01,990 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:56:01,990 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:56:01,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:56:01,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:56:01,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:56:01,991 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:56:01,991 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:56:01,991 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:56:01,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:56:01,991 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:56:01,992 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:56:01,992 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:56:02,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:56:02,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:56:02,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:56:02,055 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:56:02,055 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:56:02,056 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-09-10 11:56:02,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf3be9e4/a0083e004e524992865ead39f379971b/FLAG3cd596635 [2018-09-10 11:56:02,921 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:56:02,922 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label37_true-unreach-call.c [2018-09-10 11:56:02,963 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf3be9e4/a0083e004e524992865ead39f379971b/FLAG3cd596635 [2018-09-10 11:56:02,981 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf3be9e4/a0083e004e524992865ead39f379971b [2018-09-10 11:56:02,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:56:02,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:56:03,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:56:03,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:56:03,010 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:56:03,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:56:02" (1/1) ... [2018-09-10 11:56:03,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ace127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:03, skipping insertion in model container [2018-09-10 11:56:03,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:56:02" (1/1) ... [2018-09-10 11:56:03,417 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:56:04,660 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:56:04,678 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:56:05,427 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:56:05,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05 WrapperNode [2018-09-10 11:56:05,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:56:05,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:56:05,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:56:05,846 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:56:05,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:05,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:06,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:56:06,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:56:06,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:56:06,226 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:56:07,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:07,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:07,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:07,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:07,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:07,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:07,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (1/1) ... [2018-09-10 11:56:07,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:56:07,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:56:07,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:56:07,472 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:56:07,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (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 11:56:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:56:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:56:07,537 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 11:56:07,538 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 11:56:07,538 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 11:56:07,538 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 11:56:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:56:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:56:07,538 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 11:56:07,539 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 11:56:07,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:56:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:56:07,539 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 11:56:07,539 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 11:56:20,912 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:56:20,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:56:20 BoogieIcfgContainer [2018-09-10 11:56:20,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:56:20,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:56:20,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:56:20,917 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:56:20,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:56:02" (1/3) ... [2018-09-10 11:56:20,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b49258a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:56:20, skipping insertion in model container [2018-09-10 11:56:20,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:56:05" (2/3) ... [2018-09-10 11:56:20,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b49258a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:56:20, skipping insertion in model container [2018-09-10 11:56:20,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:56:20" (3/3) ... [2018-09-10 11:56:20,921 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label37_true-unreach-call.c [2018-09-10 11:56:20,931 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:56:20,941 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:56:21,005 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:56:21,006 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:56:21,007 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:56:21,007 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:56:21,007 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:56:21,007 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:56:21,007 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:56:21,007 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:56:21,007 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:56:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:56:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-10 11:56:21,081 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:21,083 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] [2018-09-10 11:56:21,085 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 11:56:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2103003689, now seen corresponding path program 1 times [2018-09-10 11:56:21,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:21,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:21,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:21,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:21,151 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:21,575 WARN L175 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:56:21,673 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 11:56:21,675 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:21,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:56:21,676 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:21,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:56:21,699 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:56:21,699 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:56:21,703 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-10 11:56:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:33,941 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-09-10 11:56:33,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:56:33,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-09-10 11:56:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:33,985 INFO L225 Difference]: With dead ends: 3087 [2018-09-10 11:56:33,985 INFO L226 Difference]: Without dead ends: 1965 [2018-09-10 11:56:33,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:56:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-09-10 11:56:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-09-10 11:56:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-10 11:56:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-09-10 11:56:34,165 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 61 [2018-09-10 11:56:34,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:34,166 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-09-10 11:56:34,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:56:34,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-09-10 11:56:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-10 11:56:34,180 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:34,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:34,180 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 11:56:34,181 INFO L82 PathProgramCache]: Analyzing trace with hash 701242810, now seen corresponding path program 1 times [2018-09-10 11:56:34,181 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:34,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:34,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:34,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:34,184 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:34,464 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:34,464 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:56:34,464 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:34,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:56:34,467 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:56:34,467 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:56:34,467 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 5 states. [2018-09-10 11:57:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:03,581 INFO L93 Difference]: Finished difference Result 7491 states and 13756 transitions. [2018-09-10 11:57:03,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:57:03,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-09-10 11:57:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:03,617 INFO L225 Difference]: With dead ends: 7491 [2018-09-10 11:57:03,617 INFO L226 Difference]: Without dead ends: 5538 [2018-09-10 11:57:03,629 INFO L604 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 [2018-09-10 11:57:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2018-09-10 11:57:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 5410. [2018-09-10 11:57:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5410 states. [2018-09-10 11:57:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 8852 transitions. [2018-09-10 11:57:03,793 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 8852 transitions. Word has length 138 [2018-09-10 11:57:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:03,793 INFO L480 AbstractCegarLoop]: Abstraction has 5410 states and 8852 transitions. [2018-09-10 11:57:03,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:57:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 8852 transitions. [2018-09-10 11:57:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-10 11:57:03,800 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:03,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:03,801 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 11:57:03,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1809957348, now seen corresponding path program 1 times [2018-09-10 11:57:03,801 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:03,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:03,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:03,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:03,803 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:04,318 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:57:04,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:57:04,319 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:57:04,319 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:57:04,320 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:57:04,320 INFO L87 Difference]: Start difference. First operand 5410 states and 8852 transitions. Second operand 6 states. [2018-09-10 11:57:14,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:14,193 INFO L93 Difference]: Finished difference Result 14274 states and 24293 transitions. [2018-09-10 11:57:14,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:57:14,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-09-10 11:57:14,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:14,242 INFO L225 Difference]: With dead ends: 14274 [2018-09-10 11:57:14,242 INFO L226 Difference]: Without dead ends: 8870 [2018-09-10 11:57:14,264 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:57:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8870 states. [2018-09-10 11:57:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8870 to 8785. [2018-09-10 11:57:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8785 states. [2018-09-10 11:57:14,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8785 states to 8785 states and 13404 transitions. [2018-09-10 11:57:14,517 INFO L78 Accepts]: Start accepts. Automaton has 8785 states and 13404 transitions. Word has length 152 [2018-09-10 11:57:14,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:14,518 INFO L480 AbstractCegarLoop]: Abstraction has 8785 states and 13404 transitions. [2018-09-10 11:57:14,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:57:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand 8785 states and 13404 transitions. [2018-09-10 11:57:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-10 11:57:14,527 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:14,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:14,528 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 11:57:14,528 INFO L82 PathProgramCache]: Analyzing trace with hash 953993824, now seen corresponding path program 1 times [2018-09-10 11:57:14,528 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:14,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:14,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:14,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:14,530 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:14,951 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:57:14,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:57:14,951 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:14,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:57:14,952 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:57:14,952 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:57:14,953 INFO L87 Difference]: Start difference. First operand 8785 states and 13404 transitions. Second operand 6 states. [2018-09-10 11:57:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:26,253 INFO L93 Difference]: Finished difference Result 29374 states and 47113 transitions. [2018-09-10 11:57:26,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:57:26,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-09-10 11:57:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:26,337 INFO L225 Difference]: With dead ends: 29374 [2018-09-10 11:57:26,338 INFO L226 Difference]: Without dead ends: 20595 [2018-09-10 11:57:26,393 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 11:57:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20595 states. [2018-09-10 11:57:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20595 to 20492. [2018-09-10 11:57:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20492 states. [2018-09-10 11:57:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20492 states to 20492 states and 29430 transitions. [2018-09-10 11:57:26,886 INFO L78 Accepts]: Start accepts. Automaton has 20492 states and 29430 transitions. Word has length 157 [2018-09-10 11:57:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:26,886 INFO L480 AbstractCegarLoop]: Abstraction has 20492 states and 29430 transitions. [2018-09-10 11:57:26,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:57:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 20492 states and 29430 transitions. [2018-09-10 11:57:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-09-10 11:57:26,894 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:26,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:26,895 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 11:57:26,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2102818936, now seen corresponding path program 1 times [2018-09-10 11:57:26,895 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:26,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:26,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:26,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:26,897 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:27,235 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:57:27,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:57:27,235 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:27,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:27,236 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:27,236 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:57:27,237 INFO L87 Difference]: Start difference. First operand 20492 states and 29430 transitions. Second operand 5 states. [2018-09-10 11:58:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:04,064 INFO L93 Difference]: Finished difference Result 54257 states and 81648 transitions. [2018-09-10 11:58:04,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:58:04,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-09-10 11:58:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:04,203 INFO L225 Difference]: With dead ends: 54257 [2018-09-10 11:58:04,204 INFO L226 Difference]: Without dead ends: 33771 [2018-09-10 11:58:04,259 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:58:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33771 states. [2018-09-10 11:58:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33771 to 33628. [2018-09-10 11:58:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33628 states. [2018-09-10 11:58:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33628 states to 33628 states and 50324 transitions. [2018-09-10 11:58:04,984 INFO L78 Accepts]: Start accepts. Automaton has 33628 states and 50324 transitions. Word has length 169 [2018-09-10 11:58:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:04,985 INFO L480 AbstractCegarLoop]: Abstraction has 33628 states and 50324 transitions. [2018-09-10 11:58:04,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:58:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 33628 states and 50324 transitions. [2018-09-10 11:58:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-10 11:58:05,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:05,003 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, 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] [2018-09-10 11:58:05,003 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 11:58:05,003 INFO L82 PathProgramCache]: Analyzing trace with hash -2062396899, now seen corresponding path program 1 times [2018-09-10 11:58:05,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:05,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:05,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:05,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:05,005 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:58:05,482 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:05,482 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 11:58:05,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:05,502 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:58:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:05,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-10 11:58:05,896 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:06,111 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:58:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:58:07,093 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:58:07,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-10 11:58:07,094 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:07,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:58:07,095 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:58:07,095 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:58:07,095 INFO L87 Difference]: Start difference. First operand 33628 states and 50324 transitions. Second operand 5 states. [2018-09-10 11:58:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:22,383 INFO L93 Difference]: Finished difference Result 95991 states and 161905 transitions. [2018-09-10 11:58:22,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:58:22,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2018-09-10 11:58:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:23,086 INFO L225 Difference]: With dead ends: 95991 [2018-09-10 11:58:23,086 INFO L226 Difference]: Without dead ends: 63177 [2018-09-10 11:58:23,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 446 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:58:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63177 states. [2018-09-10 11:58:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63177 to 62705. [2018-09-10 11:58:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62705 states. [2018-09-10 11:58:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62705 states to 62705 states and 94239 transitions. [2018-09-10 11:58:24,705 INFO L78 Accepts]: Start accepts. Automaton has 62705 states and 94239 transitions. Word has length 224 [2018-09-10 11:58:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:24,705 INFO L480 AbstractCegarLoop]: Abstraction has 62705 states and 94239 transitions. [2018-09-10 11:58:24,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:58:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 62705 states and 94239 transitions. [2018-09-10 11:58:24,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-10 11:58:24,719 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:24,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:24,720 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 11:58:24,720 INFO L82 PathProgramCache]: Analyzing trace with hash 335801557, now seen corresponding path program 1 times [2018-09-10 11:58:24,720 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:24,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:24,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:24,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:24,722 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:25,131 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:25,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:58:25,131 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:25,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:58:25,132 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:58:25,132 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:58:25,132 INFO L87 Difference]: Start difference. First operand 62705 states and 94239 transitions. Second operand 5 states. [2018-09-10 11:58:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:40,634 INFO L93 Difference]: Finished difference Result 163411 states and 245311 transitions. [2018-09-10 11:58:40,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:58:40,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2018-09-10 11:58:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:41,052 INFO L225 Difference]: With dead ends: 163411 [2018-09-10 11:58:41,052 INFO L226 Difference]: Without dead ends: 100712 [2018-09-10 11:58:41,251 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:58:41,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100712 states. [2018-09-10 11:58:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100712 to 98952. [2018-09-10 11:58:43,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98952 states. [2018-09-10 11:58:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98952 states to 98952 states and 137712 transitions. [2018-09-10 11:58:43,746 INFO L78 Accepts]: Start accepts. Automaton has 98952 states and 137712 transitions. Word has length 232 [2018-09-10 11:58:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:43,746 INFO L480 AbstractCegarLoop]: Abstraction has 98952 states and 137712 transitions. [2018-09-10 11:58:43,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:58:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 98952 states and 137712 transitions. [2018-09-10 11:58:43,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-09-10 11:58:43,782 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:43,782 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:58:43,782 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 11:58:43,783 INFO L82 PathProgramCache]: Analyzing trace with hash 422650839, now seen corresponding path program 1 times [2018-09-10 11:58:43,783 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:43,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:43,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:43,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:43,784 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:44,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:44,310 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 11:58:44,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:44,321 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:58:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:44,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-10 11:58:44,681 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 113 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:45,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:45,060 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:58:45,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:45,076 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:58:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:45,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:45,710 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:46,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:58:46,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 21 [2018-09-10 11:58:46,025 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:58:46,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:58:46,027 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:58:46,027 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2018-09-10 11:58:46,029 INFO L87 Difference]: Start difference. First operand 98952 states and 137712 transitions. Second operand 11 states. [2018-09-10 11:59:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:40,182 INFO L93 Difference]: Finished difference Result 302592 states and 455007 transitions. [2018-09-10 11:59:40,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-10 11:59:40,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2018-09-10 11:59:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:40,991 INFO L225 Difference]: With dead ends: 302592 [2018-09-10 11:59:40,991 INFO L226 Difference]: Without dead ends: 193321 [2018-09-10 11:59:41,348 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1226 GetRequests, 1151 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=971, Invalid=4729, Unknown=0, NotChecked=0, Total=5700 [2018-09-10 11:59:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193321 states. [2018-09-10 11:59:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193321 to 191657. [2018-09-10 11:59:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191657 states. [2018-09-10 11:59:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191657 states to 191657 states and 250753 transitions. [2018-09-10 11:59:45,588 INFO L78 Accepts]: Start accepts. Automaton has 191657 states and 250753 transitions. Word has length 285 [2018-09-10 11:59:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:45,589 INFO L480 AbstractCegarLoop]: Abstraction has 191657 states and 250753 transitions. [2018-09-10 11:59:45,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 11:59:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 191657 states and 250753 transitions. [2018-09-10 11:59:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-10 11:59:45,617 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:45,617 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:59:45,617 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 11:59:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash 871020555, now seen corresponding path program 1 times [2018-09-10 11:59:45,618 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:45,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:45,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:45,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:45,619 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:45,950 WARN L175 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:59:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-10 11:59:46,013 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:46,013 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 11:59:46,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:46,021 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:46,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:46,363 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:47,606 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:47,607 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:59:47,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:47,626 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:47,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-10 11:59:47,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-10 11:59:48,287 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 11:59:48,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 12 [2018-09-10 11:59:48,288 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:48,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:48,289 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:48,289 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:59:48,290 INFO L87 Difference]: Start difference. First operand 191657 states and 250753 transitions. Second operand 5 states. Received shutdown request... [2018-09-10 11:59:56,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:59:56,905 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:59:56,910 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:59:56,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:59:56 BoogieIcfgContainer [2018-09-10 11:59:56,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:59:56,912 INFO L168 Benchmark]: Toolchain (without parser) took 233915.63 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-10 11:59:56,913 INFO L168 Benchmark]: CDTParser took 0.22 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 11:59:56,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2844.64 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:59:56,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 380.26 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 11:59:56,915 INFO L168 Benchmark]: Boogie Preprocessor took 1245.23 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 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:59:56,916 INFO L168 Benchmark]: RCFGBuilder took 13442.21 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 146.8 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 95.8 MB). Peak memory consumption was 742.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:59:56,917 INFO L168 Benchmark]: TraceAbstraction took 215996.56 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 810.0 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.2 MB). Peak memory consumption was 845.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:59:56,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2844.64 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 380.26 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 1245.23 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 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13442.21 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 146.8 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 95.8 MB). Peak memory consumption was 742.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215996.56 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 810.0 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.2 MB). Peak memory consumption was 845.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (191657states) and FLOYD_HOARE automaton (currently 6 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (249715 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 215.9s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 196.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3744 SDtfs, 46021 SDslu, 6030 SDs, 0 SdLazy, 82419 SolverSat, 17887 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 164.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2894 GetRequests, 2753 SyntacticMatches, 14 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1707 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191657occurred 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: 10.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 4361 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 3076 NumberOfCodeBlocks, 3076 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4427 ConstructedInterpolants, 0 QuantifiedInterpolants, 3483913 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2460 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 2722/2975 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_label37_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-59-56-936.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label37_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-59-56-936.csv Completed graceful shutdown