./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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 -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b5ce1e17bce3e34a2c882b1080bdbc1a62cb801 ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: null --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:22:45,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:22:45,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:22:45,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:22:45,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:22:45,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:22:45,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:22:45,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:22:45,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:22:45,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:22:45,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:22:45,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:22:45,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:22:45,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:22:45,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:22:45,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:22:45,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:22:45,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:22:45,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:22:45,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:22:45,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:22:45,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:22:45,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:22:45,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:22:45,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:22:45,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:22:45,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:22:45,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:22:45,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:22:45,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:22:45,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:22:45,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:22:45,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:22:45,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:22:45,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:22:45,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:22:45,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:22:45,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:22:45,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:22:45,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:22:45,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:22:45,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-07-29 01:22:45,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:22:45,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:22:45,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:22:45,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:22:45,908 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:22:45,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:22:45,909 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:22:45,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:22:45,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:22:45,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:22:45,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:22:45,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:22:45,910 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:22:45,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:22:45,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:22:45,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:22:45,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:22:45,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:22:45,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:22:45,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:22:45,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:22:45,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:22:45,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:22:45,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:22:45,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:22:45,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:22:45,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:22:45,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:22:45,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b5ce1e17bce3e34a2c882b1080bdbc1a62cb801 [2020-07-29 01:22:46,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:22:46,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:22:46,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:22:46,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:22:46,234 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:22:46,235 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2020-07-29 01:22:46,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e551016/1da61f4758674e8ea96a62aa563fb9aa/FLAG137952ed4 [2020-07-29 01:22:46,687 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:22:46,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2020-07-29 01:22:46,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e551016/1da61f4758674e8ea96a62aa563fb9aa/FLAG137952ed4 [2020-07-29 01:22:47,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e551016/1da61f4758674e8ea96a62aa563fb9aa [2020-07-29 01:22:47,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:22:47,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:22:47,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:22:47,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:22:47,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:22:47,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd56ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47, skipping insertion in model container [2020-07-29 01:22:47,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:22:47,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:22:47,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:22:47,326 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:22:47,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:22:47,359 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:22:47,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47 WrapperNode [2020-07-29 01:22:47,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:22:47,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:22:47,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:22:47,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:22:47,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:22:47,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:22:47,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:22:47,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:22:47,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (1/1) ... [2020-07-29 01:22:47,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:22:47,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:22:47,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:22:47,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:22:47,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (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 [2020-07-29 01:22:47,553 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2020-07-29 01:22:47,554 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2020-07-29 01:22:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2020-07-29 01:22:47,554 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2020-07-29 01:22:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:22:47,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:22:47,943 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:22:47,943 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-29 01:22:47,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:22:47 BoogieIcfgContainer [2020-07-29 01:22:47,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:22:47,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:22:47,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:22:47,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:22:47,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:22:47" (1/3) ... [2020-07-29 01:22:47,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd1e2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:22:47, skipping insertion in model container [2020-07-29 01:22:47,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:22:47" (2/3) ... [2020-07-29 01:22:47,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd1e2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:22:47, skipping insertion in model container [2020-07-29 01:22:47,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:22:47" (3/3) ... [2020-07-29 01:22:47,957 INFO L109 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1c.c [2020-07-29 01:22:47,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:22:47,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-07-29 01:22:47,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-07-29 01:22:48,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:22:48,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:22:48,015 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:22:48,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:22:48,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:22:48,016 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:22:48,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:22:48,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:22:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-29 01:22:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-29 01:22:48,044 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:22:48,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-29 01:22:48,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:22:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:22:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2020-07-29 01:22:48,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:22:48,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422852596] [2020-07-29 01:22:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:22:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:22:48,270 INFO L280 TraceCheckUtils]: 0: Hoare triple {47#true} havoc main_#res;havoc main_#t~nondet5, main_#t~ret6, main_~x~0;assume -2147483648 <= main_#t~nondet5 && main_#t~nondet5 <= 2147483647;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; {49#(<= ULTIMATE.start_main_~x~0 2147483647)} is VALID [2020-07-29 01:22:48,273 INFO L263 TraceCheckUtils]: 1: Hoare triple {49#(<= ULTIMATE.start_main_~x~0 2147483647)} call main_#t~ret6 := rec2(main_~x~0); {50#(<= |rec2_#in~j| 2147483647)} is VALID [2020-07-29 01:22:48,274 INFO L280 TraceCheckUtils]: 2: Hoare triple {50#(<= |rec2_#in~j| 2147483647)} ~j := #in~j; {51#(<= rec2_~j 2147483647)} is VALID [2020-07-29 01:22:48,275 INFO L280 TraceCheckUtils]: 3: Hoare triple {51#(<= rec2_~j 2147483647)} assume !(~j <= 0); {51#(<= rec2_~j 2147483647)} is VALID [2020-07-29 01:22:48,276 INFO L280 TraceCheckUtils]: 4: Hoare triple {51#(<= rec2_~j 2147483647)} assume !(~j - 1 <= 2147483647); {48#false} is VALID [2020-07-29 01:22:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:22:48,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422852596] [2020-07-29 01:22:48,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:22:48,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 01:22:48,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625827907] [2020-07-29 01:22:48,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-07-29 01:22:48,286 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:22:48,289 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-29 01:22:48,303 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 5 edges. 5 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:22:48,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-29 01:22:48,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:22:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-29 01:22:48,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:22:48,316 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-07-29 01:22:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:22:48,612 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-07-29 01:22:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-29 01:22:48,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-07-29 01:22:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:22:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:22:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2020-07-29 01:22:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:22:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2020-07-29 01:22:48,629 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 49 transitions. [2020-07-29 01:22:48,705 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:22:48,719 INFO L225 Difference]: With dead ends: 44 [2020-07-29 01:22:48,720 INFO L226 Difference]: Without dead ends: 39 [2020-07-29 01:22:48,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-29 01:22:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-29 01:22:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-29 01:22:48,772 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:22:48,773 INFO L82 GeneralOperation]: Start isEquivalent. First operand 39 states. Second operand 39 states. [2020-07-29 01:22:48,774 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand 39 states. [2020-07-29 01:22:48,774 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 39 states. [2020-07-29 01:22:48,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:22:48,783 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-07-29 01:22:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-29 01:22:48,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:22:48,786 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:22:48,786 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand 39 states. [2020-07-29 01:22:48,787 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 39 states. [2020-07-29 01:22:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:22:48,794 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-07-29 01:22:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-29 01:22:48,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:22:48,796 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:22:48,797 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:22:48,797 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:22:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-29 01:22:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-29 01:22:48,804 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 5 [2020-07-29 01:22:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:22:48,804 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-29 01:22:48,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-29 01:22:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-29 01:22:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-29 01:22:48,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:22:48,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-29 01:22:48,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:22:48,808 INFO L427 AbstractCegarLoop]: === Iteration 2 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:22:48,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:22:48,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2121179530, now seen corresponding path program 1 times [2020-07-29 01:22:48,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:22:48,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032510051] [2020-07-29 01:22:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:22:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:22:48,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:22:48,818 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-29 01:22:48,826 INFO L168 Benchmark]: Toolchain (without parser) took 1775.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 952.2 MB in the beginning and 1.0 GB in the end (delta: -68.9 MB). Peak memory consumption was 65.9 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:48,827 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:22:48,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.63 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:48,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.82 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:22:48,830 INFO L168 Benchmark]: Boogie Preprocessor took 86.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:48,831 INFO L168 Benchmark]: RCFGBuilder took 470.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:48,832 INFO L168 Benchmark]: TraceAbstraction took 873.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:22:48,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.63 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.82 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 86.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 470.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 873.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...