./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/combinations/gcd_2+newton_1_6.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:16:41,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:16:41,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:16:41,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:16:41,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:16:41,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:16:41,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:16:41,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:16:41,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:16:41,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:16:41,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:16:41,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:16:41,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:16:41,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:16:41,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:16:41,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:16:41,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:16:41,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:16:41,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:16:41,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:16:41,061 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:16:41,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:16:41,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:16:41,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:16:41,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:16:41,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:16:41,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:16:41,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:16:41,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:16:41,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:16:41,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:16:41,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:16:41,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:16:41,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:16:41,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:16:41,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:16:41,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:16:41,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:16:41,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:16:41,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:16:41,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:16:41,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:16:41,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:16:41,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:16:41,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:16:41,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:16:41,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:16:41,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:16:41,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:16:41,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:16:41,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:16:41,102 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:16:41,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:16:41,102 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:16:41,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:16:41,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:16:41,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:16:41,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:16:41,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:16:41,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:16:41,103 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:16:41,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:16:41,104 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:16:41,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:16:41,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:16:41,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:16:41,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:16:41,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:16:41,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:16:41,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:16:41,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:16:41,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:16:41,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:16:41,106 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:16:41,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:16:41,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:16:41,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d [2022-07-13 20:16:41,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:16:41,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:16:41,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:16:41,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:16:41,297 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:16:41,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2022-07-13 20:16:41,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95235c573/65e24e9aeaea411c90b19e9c3e6420bb/FLAGada7d674d [2022-07-13 20:16:41,686 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:16:41,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2022-07-13 20:16:41,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95235c573/65e24e9aeaea411c90b19e9c3e6420bb/FLAGada7d674d [2022-07-13 20:16:41,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95235c573/65e24e9aeaea411c90b19e9c3e6420bb [2022-07-13 20:16:41,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:16:41,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:16:41,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:16:41,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:16:41,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:16:41,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f9060c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41, skipping insertion in model container [2022-07-13 20:16:41,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:16:41,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:16:41,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2022-07-13 20:16:41,890 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2022-07-13 20:16:41,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:16:41,897 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:16:41,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2022-07-13 20:16:41,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2022-07-13 20:16:41,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:16:41,940 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:16:41,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41 WrapperNode [2022-07-13 20:16:41,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:16:41,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:16:41,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:16:41,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:16:41,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,975 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-13 20:16:41,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:16:41,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:16:41,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:16:41,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:16:41,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:41,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:42,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:42,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:16:42,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:16:42,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:16:42,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:16:42,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (1/1) ... [2022-07-13 20:16:42,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:16:42,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:16:42,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:16:42,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:16:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:16:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:16:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:16:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:16:42,104 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:16:42,105 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:16:42,249 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:16:42,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:16:42,253 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:16:42,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:16:42 BoogieIcfgContainer [2022-07-13 20:16:42,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:16:42,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:16:42,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:16:42,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:16:42,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:16:41" (1/3) ... [2022-07-13 20:16:42,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fad5fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:16:42, skipping insertion in model container [2022-07-13 20:16:42,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:41" (2/3) ... [2022-07-13 20:16:42,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fad5fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:16:42, skipping insertion in model container [2022-07-13 20:16:42,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:16:42" (3/3) ... [2022-07-13 20:16:42,259 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_6.i [2022-07-13 20:16:42,268 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:16:42,268 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:16:42,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:16:42,346 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c55f6b3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@48fb88f0 [2022-07-13 20:16:42,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:16:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:16:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:16:42,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:16:42,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:16:42,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:16:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:16:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-13 20:16:42,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:16:42,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896106639] [2022-07-13 20:16:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:16:42,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:16:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:16:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:16:42,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:16:42,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896106639] [2022-07-13 20:16:42,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896106639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:16:42,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:16:42,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:16:42,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692195149] [2022-07-13 20:16:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:16:42,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:16:42,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:16:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:16:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:16:42,497 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:16:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:16:42,510 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-13 20:16:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:16:42,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 20:16:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:16:42,516 INFO L225 Difference]: With dead ends: 47 [2022-07-13 20:16:42,517 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 20:16:42,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:16:42,521 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:16:42,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:16:42,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 20:16:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-13 20:16:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:16:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-13 20:16:42,542 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-13 20:16:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:16:42,542 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-13 20:16:42,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:16:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-13 20:16:42,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:16:42,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:16:42,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:16:42,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:16:42,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:16:42,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:16:42,546 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-13 20:16:42,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:16:42,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716401077] [2022-07-13 20:16:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:16:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:16:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:16:42,567 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 20:16:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:16:42,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 20:16:42,602 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 20:16:42,603 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-13 20:16:42,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-13 20:16:42,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:16:42,608 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 20:16:42,611 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 20:16:42,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 08:16:42 BoogieIcfgContainer [2022-07-13 20:16:42,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 20:16:42,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 20:16:42,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 20:16:42,632 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 20:16:42,632 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:16:42" (3/4) ... [2022-07-13 20:16:42,634 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 20:16:42,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 20:16:42,636 INFO L158 Benchmark]: Toolchain (without parser) took 925.52ms. Allocated memory was 88.1MB in the beginning and 127.9MB in the end (delta: 39.8MB). Free memory was 48.5MB in the beginning and 83.7MB in the end (delta: -35.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-07-13 20:16:42,636 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 65.2MB in the beginning and 65.1MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:16:42,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.03ms. Allocated memory was 88.1MB in the beginning and 127.9MB in the end (delta: 39.8MB). Free memory was 48.3MB in the beginning and 106.0MB in the end (delta: -57.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2022-07-13 20:16:42,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.29ms. Allocated memory is still 127.9MB. Free memory was 106.0MB in the beginning and 103.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 20:16:42,640 INFO L158 Benchmark]: Boogie Preprocessor took 29.27ms. Allocated memory is still 127.9MB. Free memory was 103.9MB in the beginning and 102.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 20:16:42,640 INFO L158 Benchmark]: RCFGBuilder took 247.70ms. Allocated memory is still 127.9MB. Free memory was 102.6MB in the beginning and 92.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 20:16:42,641 INFO L158 Benchmark]: TraceAbstraction took 375.53ms. Allocated memory is still 127.9MB. Free memory was 91.3MB in the beginning and 84.4MB in the end (delta: 6.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-07-13 20:16:42,641 INFO L158 Benchmark]: Witness Printer took 2.73ms. Allocated memory is still 127.9MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:16:42,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 65.2MB in the beginning and 65.1MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.03ms. Allocated memory was 88.1MB in the beginning and 127.9MB in the end (delta: 39.8MB). Free memory was 48.3MB in the beginning and 106.0MB in the end (delta: -57.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.29ms. Allocated memory is still 127.9MB. Free memory was 106.0MB in the beginning and 103.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.27ms. Allocated memory is still 127.9MB. Free memory was 103.9MB in the beginning and 102.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 247.70ms. Allocated memory is still 127.9MB. Free memory was 102.6MB in the beginning and 92.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 375.53ms. Allocated memory is still 127.9MB. Free memory was 91.3MB in the beginning and 84.4MB in the end (delta: 6.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Witness Printer took 2.73ms. Allocated memory is still 127.9MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-13 20:16:42,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/combinations/gcd_2+newton_1_6.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:16:44,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:16:44,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:16:44,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:16:44,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:16:44,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:16:44,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:16:44,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:16:44,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:16:44,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:16:44,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:16:44,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:16:44,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:16:44,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:16:44,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:16:44,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:16:44,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:16:44,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:16:44,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:16:44,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:16:44,303 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:16:44,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:16:44,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:16:44,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:16:44,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:16:44,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:16:44,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:16:44,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:16:44,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:16:44,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:16:44,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:16:44,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:16:44,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:16:44,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:16:44,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:16:44,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:16:44,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:16:44,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:16:44,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:16:44,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:16:44,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:16:44,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:16:44,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 20:16:44,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:16:44,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:16:44,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:16:44,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:16:44,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:16:44,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:16:44,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:16:44,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:16:44,351 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:16:44,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:16:44,352 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:16:44,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:16:44,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:16:44,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:16:44,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:16:44,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:16:44,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 20:16:44,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 20:16:44,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 20:16:44,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:16:44,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:16:44,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:16:44,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:16:44,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:16:44,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:16:44,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:16:44,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:16:44,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:16:44,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:16:44,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:16:44,355 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 20:16:44,355 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 20:16:44,355 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:16:44,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:16:44,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:16:44,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 20:16:44,356 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d [2022-07-13 20:16:44,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:16:44,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:16:44,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:16:44,585 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:16:44,585 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:16:44,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2022-07-13 20:16:44,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9b4ad8a/00995b8db2044fb49b7f5feec57987b0/FLAG80183ec5e [2022-07-13 20:16:44,942 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:16:44,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2022-07-13 20:16:44,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9b4ad8a/00995b8db2044fb49b7f5feec57987b0/FLAG80183ec5e [2022-07-13 20:16:45,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c9b4ad8a/00995b8db2044fb49b7f5feec57987b0 [2022-07-13 20:16:45,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:16:45,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:16:45,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:16:45,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:16:45,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:16:45,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d227911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45, skipping insertion in model container [2022-07-13 20:16:45,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:16:45,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:16:45,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2022-07-13 20:16:45,479 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2022-07-13 20:16:45,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:16:45,486 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:16:45,512 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2022-07-13 20:16:45,519 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2022-07-13 20:16:45,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:16:45,528 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:16:45,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45 WrapperNode [2022-07-13 20:16:45,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:16:45,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:16:45,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:16:45,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:16:45,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,553 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-13 20:16:45,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:16:45,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:16:45,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:16:45,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:16:45,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:16:45,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:16:45,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:16:45,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:16:45,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (1/1) ... [2022-07-13 20:16:45,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:16:45,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:16:45,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:16:45,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:16:45,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:16:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 20:16:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:16:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:16:45,676 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:16:45,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:16:51,424 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:16:51,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:16:51,428 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:16:51,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:16:51 BoogieIcfgContainer [2022-07-13 20:16:51,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:16:51,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:16:51,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:16:51,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:16:51,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:16:45" (1/3) ... [2022-07-13 20:16:51,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2188df49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:16:51, skipping insertion in model container [2022-07-13 20:16:51,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:16:45" (2/3) ... [2022-07-13 20:16:51,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2188df49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:16:51, skipping insertion in model container [2022-07-13 20:16:51,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:16:51" (3/3) ... [2022-07-13 20:16:51,434 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_6.i [2022-07-13 20:16:51,442 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:16:51,442 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:16:51,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:16:51,479 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d16352a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cf6ea78 [2022-07-13 20:16:51,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:16:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:16:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:16:51,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:16:51,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:16:51,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:16:51,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:16:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-13 20:16:51,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 20:16:51,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958990678] [2022-07-13 20:16:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:16:51,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 20:16:51,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 20:16:51,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 20:16:51,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 20:16:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:16:52,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 20:16:52,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:16:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:16:52,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:16:52,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 20:16:52,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958990678] [2022-07-13 20:16:52,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958990678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:16:52,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:16:52,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:16:52,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222259593] [2022-07-13 20:16:52,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:16:52,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:16:52,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 20:16:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:16:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:16:52,352 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:16:52,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:16:52,361 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-13 20:16:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:16:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 20:16:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:16:52,367 INFO L225 Difference]: With dead ends: 47 [2022-07-13 20:16:52,367 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 20:16:52,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:16:52,371 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:16:52,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:16:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 20:16:52,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-13 20:16:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:16:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-13 20:16:52,390 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-13 20:16:52,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:16:52,390 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-13 20:16:52,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:16:52,391 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-13 20:16:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:16:52,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:16:52,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:16:52,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 20:16:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 20:16:52,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:16:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:16:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-13 20:16:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 20:16:52,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593679752] [2022-07-13 20:16:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:16:52,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 20:16:52,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 20:16:52,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 20:16:52,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 20:17:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:17:22,985 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 20:17:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:17:25,725 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-13 20:17:25,725 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 20:17:25,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-13 20:17:25,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-13 20:17:25,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 20:17:25,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 20:17:25,930 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 20:17:25,932 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 20:17:25,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 08:17:25 BoogieIcfgContainer [2022-07-13 20:17:25,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 20:17:25,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 20:17:25,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 20:17:25,948 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 20:17:25,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:16:51" (3/4) ... [2022-07-13 20:17:25,950 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 20:17:25,971 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 20:17:25,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 20:17:25,975 INFO L158 Benchmark]: Toolchain (without parser) took 40606.43ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 44.1MB in the beginning and 39.6MB in the end (delta: 4.5MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2022-07-13 20:17:25,977 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 45.0MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:17:25,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.29ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 45.1MB in the end (delta: -1.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 20:17:25,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.40ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 43.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:17:25,982 INFO L158 Benchmark]: Boogie Preprocessor took 24.17ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 41.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 20:17:25,983 INFO L158 Benchmark]: RCFGBuilder took 5850.82ms. Allocated memory is still 62.9MB. Free memory was 41.8MB in the beginning and 31.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 20:17:25,983 INFO L158 Benchmark]: TraceAbstraction took 34517.65ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 30.4MB in the beginning and 41.3MB in the end (delta: -10.8MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-07-13 20:17:25,984 INFO L158 Benchmark]: Witness Printer took 26.33ms. Allocated memory is still 79.7MB. Free memory was 41.3MB in the beginning and 39.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:17:25,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 45.0MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.29ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 45.1MB in the end (delta: -1.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.40ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 43.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.17ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 41.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5850.82ms. Allocated memory is still 62.9MB. Free memory was 41.8MB in the beginning and 31.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 34517.65ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 30.4MB in the beginning and 41.3MB in the end (delta: -10.8MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 26.33ms. Allocated memory is still 79.7MB. Free memory was 41.3MB in the beginning and 39.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.7935889363288879, \result=-0.7129530310630798, x=-0.7935889363288879] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.7935889363288879, \result=0.7019813656806946, x=-0.7935889363288879] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.7935889363288879, x=0.222040593624115] [L102] reach_error() VAL [IN=-0.7935889363288879, x=0.222040593624115] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 34.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 31.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-13 20:17:26,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE