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_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:52:46,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:52:46,846 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:52:46,861 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:52:46,862 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:52:46,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:52:46,865 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:52:46,870 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:52:46,872 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:52:46,873 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:52:46,875 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:52:46,876 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:52:46,877 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:52:46,878 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:52:46,880 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:52:46,881 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:52:46,882 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:52:46,884 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:52:46,889 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:52:46,893 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:52:46,894 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:52:46,896 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:52:46,899 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:52:46,899 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:52:46,900 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:52:46,902 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:52:46,903 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:52:46,904 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:52:46,905 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:52:46,910 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:52:46,910 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:52:46,912 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:52:46,912 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:52:46,912 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:52:46,913 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:52:46,916 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:52:46,917 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 11:52:46,945 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:52:46,945 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:52:46,946 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:52:46,948 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:52:46,948 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:52:46,948 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:52:46,948 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:52:46,949 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:52:46,949 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:52:46,949 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:52:46,949 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:52:46,950 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:52:46,951 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:52:46,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:52:46,951 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:52:46,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:52:46,953 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:52:46,953 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:52:46,954 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:52:46,954 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:52:46,954 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:52:46,954 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:52:46,955 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:52:46,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:52:46,955 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:52:46,955 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:52:46,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:52:46,956 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:52:46,956 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:52:46,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:52:46,956 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:52:46,957 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:52:46,957 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:52:47,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:52:47,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:52:47,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:52:47,045 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:52:47,045 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:52:47,046 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-09-10 11:52:47,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccf8513f/da1098ef40b040fbbf6d48b7749b6c8a/FLAGe282367db [2018-09-10 11:52:47,971 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:52:47,972 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-09-10 11:52:48,020 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccf8513f/da1098ef40b040fbbf6d48b7749b6c8a/FLAGe282367db [2018-09-10 11:52:48,037 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccf8513f/da1098ef40b040fbbf6d48b7749b6c8a [2018-09-10 11:52:48,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:52:48,052 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:52:48,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:52:48,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:52:48,061 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:52:48,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:52:48" (1/1) ... [2018-09-10 11:52:48,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45717c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:48, skipping insertion in model container [2018-09-10 11:52:48,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:52:48" (1/1) ... [2018-09-10 11:52:48,499 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:52:49,742 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:52:49,765 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:52:50,606 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:52:50,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50 WrapperNode [2018-09-10 11:52:50,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:52:50,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:52:50,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:52:50,952 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:52:50,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:51,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:51,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:52:51,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:52:51,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:52:51,344 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:52:52,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:52,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:52,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:52,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:52,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:52,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:52,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (1/1) ... [2018-09-10 11:52:52,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:52:52,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:52:52,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:52:52,606 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:52:52,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (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 11:52:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:52:52,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:52:52,681 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 11:52:52,681 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 11:52:52,681 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 11:52:52,682 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 11:52:52,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:52:52,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:52:52,682 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 11:52:52,683 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 11:52:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:52:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:52:52,683 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 11:52:52,683 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 11:53:06,599 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:53:06,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:53:06 BoogieIcfgContainer [2018-09-10 11:53:06,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:53:06,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:53:06,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:53:06,604 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:53:06,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:52:48" (1/3) ... [2018-09-10 11:53:06,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667e272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:53:06, skipping insertion in model container [2018-09-10 11:53:06,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:52:50" (2/3) ... [2018-09-10 11:53:06,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667e272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:53:06, skipping insertion in model container [2018-09-10 11:53:06,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:53:06" (3/3) ... [2018-09-10 11:53:06,608 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13_true-unreach-call.c [2018-09-10 11:53:06,618 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:53:06,628 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:53:06,692 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:53:06,693 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:53:06,693 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:53:06,694 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:53:06,694 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:53:06,694 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:53:06,694 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:53:06,694 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:53:06,694 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:53:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:53:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-10 11:53:06,748 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:53:06,749 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] [2018-09-10 11:53:06,750 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 11:53:06,757 INFO L82 PathProgramCache]: Analyzing trace with hash -100649492, now seen corresponding path program 1 times [2018-09-10 11:53:06,760 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:53:06,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:06,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:06,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:06,818 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:53:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:53:07,371 WARN L175 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:53:07,543 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 11:53:07,545 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:53:07,546 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:53:07,546 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:53:07,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:53:07,570 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:53:07,571 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:53:07,573 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-10 11:53:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:53:22,426 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-09-10 11:53:22,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:53:22,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-09-10 11:53:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:53:22,468 INFO L225 Difference]: With dead ends: 3093 [2018-09-10 11:53:22,468 INFO L226 Difference]: Without dead ends: 1971 [2018-09-10 11:53:22,480 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:53:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-09-10 11:53:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-09-10 11:53:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-09-10 11:53:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-09-10 11:53:22,632 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 64 [2018-09-10 11:53:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:53:22,633 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-09-10 11:53:22,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:53:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-09-10 11:53:22,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-09-10 11:53:22,642 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:53:22,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:22,643 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 11:53:22,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1481263410, now seen corresponding path program 1 times [2018-09-10 11:53:22,644 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:53:22,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:22,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:22,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:22,645 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:53:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:53:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:53:22,994 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:53:22,995 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 11:53:22,995 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:53:22,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 11:53:22,997 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 11:53:22,998 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:53:22,998 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 7 states. [2018-09-10 11:53:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:53:51,833 INFO L93 Difference]: Finished difference Result 7403 states and 13853 transitions. [2018-09-10 11:53:51,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:53:51,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2018-09-10 11:53:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:53:51,880 INFO L225 Difference]: With dead ends: 7403 [2018-09-10 11:53:51,880 INFO L226 Difference]: Without dead ends: 5452 [2018-09-10 11:53:51,892 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:53:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5452 states. [2018-09-10 11:53:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5452 to 5389. [2018-09-10 11:53:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5389 states. [2018-09-10 11:53:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 8256 transitions. [2018-09-10 11:53:52,075 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 8256 transitions. Word has length 147 [2018-09-10 11:53:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:53:52,076 INFO L480 AbstractCegarLoop]: Abstraction has 5389 states and 8256 transitions. [2018-09-10 11:53:52,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 11:53:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 8256 transitions. [2018-09-10 11:53:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-10 11:53:52,082 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:53:52,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:52,083 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 11:53:52,083 INFO L82 PathProgramCache]: Analyzing trace with hash 830443648, now seen corresponding path program 1 times [2018-09-10 11:53:52,084 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:53:52,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:52,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:52,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:52,085 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:53:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:53:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:53:52,495 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:53:52,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:53:52,495 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:53:52,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:53:52,496 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:53:52,497 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:53:52,497 INFO L87 Difference]: Start difference. First operand 5389 states and 8256 transitions. Second operand 5 states. [2018-09-10 11:54:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:54:13,951 INFO L93 Difference]: Finished difference Result 15825 states and 25181 transitions. [2018-09-10 11:54:13,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:54:13,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2018-09-10 11:54:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:54:14,001 INFO L225 Difference]: With dead ends: 15825 [2018-09-10 11:54:14,001 INFO L226 Difference]: Without dead ends: 10442 [2018-09-10 11:54:14,029 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:54:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2018-09-10 11:54:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 10433. [2018-09-10 11:54:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10433 states. [2018-09-10 11:54:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10433 states to 10433 states and 15591 transitions. [2018-09-10 11:54:14,281 INFO L78 Accepts]: Start accepts. Automaton has 10433 states and 15591 transitions. Word has length 154 [2018-09-10 11:54:14,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:54:14,282 INFO L480 AbstractCegarLoop]: Abstraction has 10433 states and 15591 transitions. [2018-09-10 11:54:14,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:54:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10433 states and 15591 transitions. [2018-09-10 11:54:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-10 11:54:14,286 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:54:14,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:14,286 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 11:54:14,286 INFO L82 PathProgramCache]: Analyzing trace with hash -991517960, now seen corresponding path program 1 times [2018-09-10 11:54:14,287 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:54:14,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:14,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:14,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:14,288 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:54:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:14,596 WARN L175 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:54:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:54:15,034 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:54:15,034 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:54:15,034 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:54:15,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:54:15,035 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:54:15,036 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:54:15,036 INFO L87 Difference]: Start difference. First operand 10433 states and 15591 transitions. Second operand 6 states. [2018-09-10 11:54:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:54:28,493 INFO L93 Difference]: Finished difference Result 29752 states and 47957 transitions. [2018-09-10 11:54:28,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:54:28,494 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-09-10 11:54:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:54:28,585 INFO L225 Difference]: With dead ends: 29752 [2018-09-10 11:54:28,585 INFO L226 Difference]: Without dead ends: 19325 [2018-09-10 11:54:28,625 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 11:54:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19325 states. [2018-09-10 11:54:29,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19325 to 19186. [2018-09-10 11:54:29,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19186 states. [2018-09-10 11:54:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19186 states to 19186 states and 28218 transitions. [2018-09-10 11:54:29,154 INFO L78 Accepts]: Start accepts. Automaton has 19186 states and 28218 transitions. Word has length 174 [2018-09-10 11:54:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:54:29,154 INFO L480 AbstractCegarLoop]: Abstraction has 19186 states and 28218 transitions. [2018-09-10 11:54:29,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:54:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 19186 states and 28218 transitions. [2018-09-10 11:54:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-10 11:54:29,165 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:54:29,165 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, 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] [2018-09-10 11:54:29,166 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 11:54:29,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1104518048, now seen corresponding path program 1 times [2018-09-10 11:54:29,166 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:54:29,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:29,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:29,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:29,168 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:54:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:29,477 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:54:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 114 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:54:29,869 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:54:29,870 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 11:54:29,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:29,891 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:54:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:30,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:54:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-09-10 11:54:30,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:54:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 114 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:54:31,069 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:54:31,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 11:54:31,069 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:54:31,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:54:31,070 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:54:31,070 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:54:31,071 INFO L87 Difference]: Start difference. First operand 19186 states and 28218 transitions. Second operand 5 states. [2018-09-10 11:54:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:54:49,254 INFO L93 Difference]: Finished difference Result 55510 states and 86997 transitions. [2018-09-10 11:54:49,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:54:49,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2018-09-10 11:54:49,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:54:49,465 INFO L225 Difference]: With dead ends: 55510 [2018-09-10 11:54:49,465 INFO L226 Difference]: Without dead ends: 36330 [2018-09-10 11:54:49,555 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 471 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:54:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36330 states. [2018-09-10 11:54:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36330 to 35976. [2018-09-10 11:54:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35976 states. [2018-09-10 11:54:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35976 states to 35976 states and 50933 transitions. [2018-09-10 11:54:50,962 INFO L78 Accepts]: Start accepts. Automaton has 35976 states and 50933 transitions. Word has length 238 [2018-09-10 11:54:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:54:50,962 INFO L480 AbstractCegarLoop]: Abstraction has 35976 states and 50933 transitions. [2018-09-10 11:54:50,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:54:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 35976 states and 50933 transitions. [2018-09-10 11:54:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-09-10 11:54:50,976 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:54:50,977 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:54:50,977 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 11:54:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2097067490, now seen corresponding path program 1 times [2018-09-10 11:54:50,978 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:54:50,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:50,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:50,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:50,980 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:54:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 191 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:54:51,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:54:51,754 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 11:54:51,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:51,762 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:54:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:51,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:54:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:54:52,117 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:54:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:54:52,281 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:54:52,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2018-09-10 11:54:52,281 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:54:52,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:54:52,282 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:54:52,282 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:54:52,283 INFO L87 Difference]: Start difference. First operand 35976 states and 50933 transitions. Second operand 3 states. [2018-09-10 11:54:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:54:59,232 INFO L93 Difference]: Finished difference Result 76015 states and 108452 transitions. [2018-09-10 11:54:59,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:54:59,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2018-09-10 11:54:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:54:59,366 INFO L225 Difference]: With dead ends: 76015 [2018-09-10 11:54:59,366 INFO L226 Difference]: Without dead ends: 40045 [2018-09-10 11:54:59,832 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 549 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:54:59,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40045 states. [2018-09-10 11:55:00,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40045 to 40031. [2018-09-10 11:55:00,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40031 states. [2018-09-10 11:55:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40031 states to 40031 states and 52299 transitions. [2018-09-10 11:55:00,506 INFO L78 Accepts]: Start accepts. Automaton has 40031 states and 52299 transitions. Word has length 275 [2018-09-10 11:55:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:00,507 INFO L480 AbstractCegarLoop]: Abstraction has 40031 states and 52299 transitions. [2018-09-10 11:55:00,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:55:00,507 INFO L276 IsEmpty]: Start isEmpty. Operand 40031 states and 52299 transitions. [2018-09-10 11:55:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-09-10 11:55:00,527 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:00,528 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:55:00,528 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 11:55:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1507674492, now seen corresponding path program 1 times [2018-09-10 11:55:00,528 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:00,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:00,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:00,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:00,530 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 253 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-10 11:55:00,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:55:00,930 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 11:55:00,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:00,938 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:55:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:01,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:55:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-09-10 11:55:01,209 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:55:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 253 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-10 11:55:01,531 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:55:01,531 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:55:01,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:01,551 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:55:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:01,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:55:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-09-10 11:55:02,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:55:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 253 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (5)] Exception during sending of exit command (exit): Broken pipe [2018-09-10 11:55:02,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:55:02,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:55:02,353 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:55:02,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:55:02,354 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:55:02,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:55:02,358 INFO L87 Difference]: Start difference. First operand 40031 states and 52299 transitions. Second operand 9 states. [2018-09-10 11:55:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:21,879 INFO L93 Difference]: Finished difference Result 103368 states and 163021 transitions. [2018-09-10 11:55:21,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 11:55:21,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 347 [2018-09-10 11:55:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:22,188 INFO L225 Difference]: With dead ends: 103368 [2018-09-10 11:55:22,188 INFO L226 Difference]: Without dead ends: 63343 [2018-09-10 11:55:22,314 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1410 GetRequests, 1387 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-10 11:55:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63343 states. [2018-09-10 11:55:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63343 to 62973. [2018-09-10 11:55:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62973 states. [2018-09-10 11:55:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62973 states to 62973 states and 92547 transitions. [2018-09-10 11:55:23,838 INFO L78 Accepts]: Start accepts. Automaton has 62973 states and 92547 transitions. Word has length 347 [2018-09-10 11:55:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:23,839 INFO L480 AbstractCegarLoop]: Abstraction has 62973 states and 92547 transitions. [2018-09-10 11:55:23,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:55:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 62973 states and 92547 transitions. [2018-09-10 11:55:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-10 11:55:23,888 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:23,889 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:23,889 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 11:55:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1863769152, now seen corresponding path program 1 times [2018-09-10 11:55:23,889 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:23,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:23,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:23,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:23,891 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:55:24,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:55:24,412 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 11:55:24,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:24,420 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:55:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:24,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:55:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:55:25,184 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:55:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:55:25,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:55:25,370 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 11:55:25,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:25,386 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:55:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:25,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:55:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:55:25,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:55:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:55:25,977 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:55:25,977 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-10 11:55:25,978 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:55:25,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:55:25,979 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:55:25,980 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-10 11:55:25,980 INFO L87 Difference]: Start difference. First operand 62973 states and 92547 transitions. Second operand 9 states. [2018-09-10 11:55:59,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:59,693 INFO L93 Difference]: Finished difference Result 199205 states and 359443 transitions. [2018-09-10 11:55:59,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-10 11:55:59,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 358 [2018-09-10 11:55:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:00,413 INFO L225 Difference]: With dead ends: 199205 [2018-09-10 11:56:00,414 INFO L226 Difference]: Without dead ends: 135430 [2018-09-10 11:56:00,756 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1494 GetRequests, 1450 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=380, Invalid=1512, Unknown=0, NotChecked=0, Total=1892 [2018-09-10 11:56:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135430 states. [2018-09-10 11:56:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135430 to 133984. [2018-09-10 11:56:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133984 states. [2018-09-10 11:56:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133984 states to 133984 states and 175526 transitions. [2018-09-10 11:56:05,087 INFO L78 Accepts]: Start accepts. Automaton has 133984 states and 175526 transitions. Word has length 358 [2018-09-10 11:56:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:05,087 INFO L480 AbstractCegarLoop]: Abstraction has 133984 states and 175526 transitions. [2018-09-10 11:56:05,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:56:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 133984 states and 175526 transitions. [2018-09-10 11:56:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-09-10 11:56:05,136 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:05,136 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:56:05,137 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 11:56:05,137 INFO L82 PathProgramCache]: Analyzing trace with hash -955481493, now seen corresponding path program 1 times [2018-09-10 11:56:05,137 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:05,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:05,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:05,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:05,138 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:05,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:05,552 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:56:05,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:05,560 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:05,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:05,854 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:06,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:06,135 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:56:06,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:06,152 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:06,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:06,553 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:06,829 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:56:06,830 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:56:06,830 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:56:06,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:56:06,832 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:56:06,832 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:56:06,833 INFO L87 Difference]: Start difference. First operand 133984 states and 175526 transitions. Second operand 9 states. [2018-09-10 11:56:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:22,877 INFO L93 Difference]: Finished difference Result 246731 states and 340816 transitions. [2018-09-10 11:56:22,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 11:56:22,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 379 [2018-09-10 11:56:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:23,297 INFO L225 Difference]: With dead ends: 246731 [2018-09-10 11:56:23,297 INFO L226 Difference]: Without dead ends: 132105 [2018-09-10 11:56:23,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1529 GetRequests, 1509 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:56:23,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132105 states. [2018-09-10 11:56:25,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132105 to 131429. [2018-09-10 11:56:25,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131429 states. [2018-09-10 11:56:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131429 states to 131429 states and 164354 transitions. [2018-09-10 11:56:26,857 INFO L78 Accepts]: Start accepts. Automaton has 131429 states and 164354 transitions. Word has length 379 [2018-09-10 11:56:26,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:26,858 INFO L480 AbstractCegarLoop]: Abstraction has 131429 states and 164354 transitions. [2018-09-10 11:56:26,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:56:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 131429 states and 164354 transitions. [2018-09-10 11:56:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-10 11:56:26,886 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:26,887 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:56:26,887 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 11:56:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1056152729, now seen corresponding path program 1 times [2018-09-10 11:56:26,888 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:26,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:26,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:26,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:26,889 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 11:56:27,475 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:27,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:56:27,476 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:27,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:56:27,477 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:56:27,477 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:56:27,477 INFO L87 Difference]: Start difference. First operand 131429 states and 164354 transitions. Second operand 5 states. Received shutdown request... [2018-09-10 11:56:37,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 11:56:37,363 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:56:37,368 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:56:37,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:56:37 BoogieIcfgContainer [2018-09-10 11:56:37,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:56:37,370 INFO L168 Benchmark]: Toolchain (without parser) took 229320.62 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 2.1 GB in the end (delta: -648.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-10 11:56:37,371 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:56:37,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2897.10 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-09-10 11:56:37,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 392.40 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 11:56:37,373 INFO L168 Benchmark]: Boogie Preprocessor took 1261.15 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 994.6 MB). 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 11:56:37,374 INFO L168 Benchmark]: RCFGBuilder took 13994.03 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 163.6 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 66.8 MB). Peak memory consumption was 745.4 MB. Max. memory is 7.1 GB. [2018-09-10 11:56:37,375 INFO L168 Benchmark]: TraceAbstraction took 210768.65 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 841.5 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 211.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-10 11:56:37,380 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2897.10 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 392.40 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 1261.15 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 994.6 MB). 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 13994.03 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 163.6 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 66.8 MB). Peak memory consumption was 745.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210768.65 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 841.5 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 211.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 183]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 183). Cancelled while BasicCegarLoop was constructing difference of abstraction (131429states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (76256 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 210.6s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 186.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5535 SDtfs, 48886 SDslu, 6179 SDs, 0 SdLazy, 75649 SolverSat, 19672 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 154.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5518 GetRequests, 5379 SyntacticMatches, 17 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133984occurred 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: 12.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 3085 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 5231 NumberOfCodeBlocks, 5231 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7886 ConstructedInterpolants, 0 QuantifiedInterpolants, 6636177 SizeOfPredicates, 6 NumberOfNonLiveVariables, 4611 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 26 InterpolantComputations, 8 PerfectInterpolantSequences, 6467/6884 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_label13_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-56-37-395.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label13_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-56-37-395.csv Completed graceful shutdown