./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_3+newton_1_4.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 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:02:11,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:02:11,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:02:11,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:02:11,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:02:11,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:02:11,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:02:11,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:02:11,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:02:11,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:02:11,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:02:11,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:02:11,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:02:11,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:02:11,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:02:11,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:02:11,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:02:11,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:02:11,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:02:11,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:02:11,931 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:02:11,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:02:11,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:02:11,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:02:11,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:02:11,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:02:11,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:02:11,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:02:11,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:02:11,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:02:11,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:02:11,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:02:11,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:02:11,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:02:11,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:02:11,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:02:11,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:02:11,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:02:11,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:02:11,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:02:11,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:02:11,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:02:11,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:02:11,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:02:11,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:02:11,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:02:11,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:02:11,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:02:11,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:02:11,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:02:11,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:02:11,976 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:02:11,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:02:11,977 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:02:11,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:02:11,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:02:11,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:02:11,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:02:11,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:02:11,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:02:11,978 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:02:11,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:02:11,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:02:11,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:02:11,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:02:11,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:02:11,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:02:11,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:02:11,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:02:11,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:02:11,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:02:11,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:02:11,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:02:11,981 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:02:11,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:02:11,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:02:11,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee [2022-07-22 20:02:12,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:02:12,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:02:12,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:02:12,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:02:12,226 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:02:12,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2022-07-22 20:02:12,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e96cc710/b5f70b32e9f54003847cffbca8508db0/FLAG4601d1700 [2022-07-22 20:02:12,639 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:02:12,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2022-07-22 20:02:12,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e96cc710/b5f70b32e9f54003847cffbca8508db0/FLAG4601d1700 [2022-07-22 20:02:12,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e96cc710/b5f70b32e9f54003847cffbca8508db0 [2022-07-22 20:02:12,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:02:12,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:02:12,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:02:12,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:02:12,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:02:12,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72be748d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12, skipping insertion in model container [2022-07-22 20:02:12,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:02:12,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:02:12,836 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_3+newton_1_4.i[1226,1239] [2022-07-22 20:02:12,870 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_3+newton_1_4.i[2820,2833] [2022-07-22 20:02:12,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:02:12,877 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:02:12,890 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_3+newton_1_4.i[1226,1239] [2022-07-22 20:02:12,895 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_3+newton_1_4.i[2820,2833] [2022-07-22 20:02:12,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:02:12,907 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:02:12,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12 WrapperNode [2022-07-22 20:02:12,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:02:12,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:02:12,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:02:12,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:02:12,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,945 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-22 20:02:12,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:02:12,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:02:12,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:02:12,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:02:12,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:02:12,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:02:12,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:02:12,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:02:12,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (1/1) ... [2022-07-22 20:02:12,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:02:12,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:02:13,012 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) [2022-07-22 20:02:13,041 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 [2022-07-22 20:02:13,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:02:13,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:02:13,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:02:13,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:02:13,102 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:02:13,103 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:02:13,231 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:02:13,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:02:13,236 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 20:02:13,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:02:13 BoogieIcfgContainer [2022-07-22 20:02:13,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:02:13,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:02:13,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:02:13,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:02:13,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:02:12" (1/3) ... [2022-07-22 20:02:13,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dc0617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:02:13, skipping insertion in model container [2022-07-22 20:02:13,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:12" (2/3) ... [2022-07-22 20:02:13,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dc0617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:02:13, skipping insertion in model container [2022-07-22 20:02:13,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:02:13" (3/3) ... [2022-07-22 20:02:13,243 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_4.i [2022-07-22 20:02:13,252 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:02:13,252 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:02:13,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:02:13,299 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@440bd815, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c27895f [2022-07-22 20:02:13,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:02:13,302 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) [2022-07-22 20:02:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 20:02:13,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:02:13,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:02:13,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:02:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:02:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-22 20:02:13,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:02:13,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421174271] [2022-07-22 20:02:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:02:13,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:02:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:02:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:02:13,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:02:13,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421174271] [2022-07-22 20:02:13,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421174271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:02:13,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:02:13,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:02:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364237113] [2022-07-22 20:02:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:02:13,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:02:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:02:13,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:02:13,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:02:13,419 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) [2022-07-22 20:02:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:02:13,428 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-22 20:02:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:02:13,429 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 [2022-07-22 20:02:13,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:02:13,433 INFO L225 Difference]: With dead ends: 47 [2022-07-22 20:02:13,434 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 20:02:13,435 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 [2022-07-22 20:02:13,438 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 [2022-07-22 20:02:13,438 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] [2022-07-22 20:02:13,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 20:02:13,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-22 20:02:13,456 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) [2022-07-22 20:02:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-22 20:02:13,457 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-22 20:02:13,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:02:13,458 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-22 20:02:13,458 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) [2022-07-22 20:02:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-22 20:02:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 20:02:13,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:02:13,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:02:13,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:02:13,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:02:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:02:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-22 20:02:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:02:13,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601994645] [2022-07-22 20:02:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:02:13,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:02:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:02:13,490 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 20:02:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:02:13,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 20:02:13,521 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 20:02:13,522 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 20:02:13,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 20:02:13,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:02:13,526 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 20:02:13,529 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 20:02:13,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 08:02:13 BoogieIcfgContainer [2022-07-22 20:02:13,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 20:02:13,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 20:02:13,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 20:02:13,550 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 20:02:13,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:02:13" (3/4) ... [2022-07-22 20:02:13,552 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 20:02:13,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 20:02:13,554 INFO L158 Benchmark]: Toolchain (without parser) took 891.23ms. Allocated memory is still 121.6MB. Free memory was 84.9MB in the beginning and 56.3MB in the end (delta: 28.7MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-07-22 20:02:13,554 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory was 92.2MB in the beginning and 92.2MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:02:13,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.16ms. Allocated memory is still 121.6MB. Free memory was 84.7MB in the beginning and 93.9MB in the end (delta: -9.2MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-22 20:02:13,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.50ms. Allocated memory is still 121.6MB. Free memory was 93.9MB in the beginning and 91.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:02:13,559 INFO L158 Benchmark]: Boogie Preprocessor took 25.30ms. Allocated memory is still 121.6MB. Free memory was 91.9MB in the beginning and 91.0MB in the end (delta: 942.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:02:13,559 INFO L158 Benchmark]: RCFGBuilder took 265.26ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 79.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 20:02:13,559 INFO L158 Benchmark]: TraceAbstraction took 310.38ms. Allocated memory is still 121.6MB. Free memory was 79.3MB in the beginning and 56.9MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-22 20:02:13,559 INFO L158 Benchmark]: Witness Printer took 2.70ms. Allocated memory is still 121.6MB. Free memory was 56.9MB in the beginning and 56.3MB in the end (delta: 576.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:02:13,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory was 92.2MB in the beginning and 92.2MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.16ms. Allocated memory is still 121.6MB. Free memory was 84.7MB in the beginning and 93.9MB in the end (delta: -9.2MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.50ms. Allocated memory is still 121.6MB. Free memory was 93.9MB in the beginning and 91.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.30ms. Allocated memory is still 121.6MB. Free memory was 91.9MB in the beginning and 91.0MB in the end (delta: 942.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.26ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 79.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 310.38ms. Allocated memory is still 121.6MB. Free memory was 79.3MB in the beginning and 56.9MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 2.70ms. Allocated memory is still 121.6MB. Free memory was 56.9MB in the beginning and 56.3MB in the end (delta: 576.6kB). 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 > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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: 0.2s, 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 [2022-07-22 20:02:13,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_3+newton_1_4.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 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:02:15,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:02:15,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:02:15,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:02:15,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:02:15,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:02:15,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:02:15,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:02:15,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:02:15,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:02:15,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:02:15,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:02:15,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:02:15,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:02:15,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:02:15,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:02:15,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:02:15,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:02:15,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:02:15,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:02:15,377 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:02:15,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:02:15,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:02:15,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:02:15,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:02:15,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:02:15,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:02:15,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:02:15,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:02:15,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:02:15,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:02:15,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:02:15,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:02:15,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:02:15,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:02:15,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:02:15,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:02:15,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:02:15,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:02:15,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:02:15,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:02:15,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:02:15,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 20:02:15,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:02:15,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:02:15,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:02:15,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:02:15,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:02:15,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:02:15,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:02:15,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:02:15,426 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:02:15,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:02:15,427 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:02:15,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:02:15,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:02:15,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:02:15,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:02:15,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:02:15,435 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 20:02:15,435 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 20:02:15,435 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 20:02:15,435 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:02:15,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:02:15,436 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:02:15,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:02:15,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:02:15,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:02:15,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:02:15,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:02:15,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:02:15,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:02:15,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:02:15,437 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 20:02:15,437 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 20:02:15,437 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:02:15,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:02:15,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:02:15,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 20:02:15,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee [2022-07-22 20:02:15,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:02:15,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:02:15,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:02:15,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:02:15,691 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:02:15,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2022-07-22 20:02:15,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38c7da511/f94709acf99a46fca4a76fdb31dd3179/FLAG04b8e7135 [2022-07-22 20:02:16,049 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:02:16,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2022-07-22 20:02:16,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38c7da511/f94709acf99a46fca4a76fdb31dd3179/FLAG04b8e7135 [2022-07-22 20:02:16,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38c7da511/f94709acf99a46fca4a76fdb31dd3179 [2022-07-22 20:02:16,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:02:16,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:02:16,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:02:16,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:02:16,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:02:16,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3780d39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16, skipping insertion in model container [2022-07-22 20:02:16,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:02:16,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:02:16,599 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_3+newton_1_4.i[1226,1239] [2022-07-22 20:02:16,613 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_3+newton_1_4.i[2820,2833] [2022-07-22 20:02:16,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:02:16,645 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:02:16,661 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_3+newton_1_4.i[1226,1239] [2022-07-22 20:02:16,668 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_3+newton_1_4.i[2820,2833] [2022-07-22 20:02:16,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:02:16,681 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:02:16,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16 WrapperNode [2022-07-22 20:02:16,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:02:16,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:02:16,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:02:16,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:02:16,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,707 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-22 20:02:16,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:02:16,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:02:16,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:02:16,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:02:16,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:02:16,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:02:16,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:02:16,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:02:16,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (1/1) ... [2022-07-22 20:02:16,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:02:16,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:02:16,747 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) [2022-07-22 20:02:16,754 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 [2022-07-22 20:02:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:02:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 20:02:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:02:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:02:16,837 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:02:16,838 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:02:22,792 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:02:22,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:02:22,796 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 20:02:22,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:02:22 BoogieIcfgContainer [2022-07-22 20:02:22,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:02:22,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:02:22,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:02:22,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:02:22,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:02:16" (1/3) ... [2022-07-22 20:02:22,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52350e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:02:22, skipping insertion in model container [2022-07-22 20:02:22,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:02:16" (2/3) ... [2022-07-22 20:02:22,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52350e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:02:22, skipping insertion in model container [2022-07-22 20:02:22,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:02:22" (3/3) ... [2022-07-22 20:02:22,815 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_4.i [2022-07-22 20:02:22,825 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:02:22,825 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:02:22,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:02:22,879 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@28beee30, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cf280d8 [2022-07-22 20:02:22,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:02:22,883 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) [2022-07-22 20:02:22,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 20:02:22,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:02:22,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:02:22,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:02:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:02:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-22 20:02:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 20:02:22,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418456173] [2022-07-22 20:02:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:02:22,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 20:02:22,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 20:02:22,911 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) [2022-07-22 20:02:22,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 20:02:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:02:23,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 20:02:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:02:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:02:23,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:02:23,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 20:02:23,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418456173] [2022-07-22 20:02:23,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418456173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:02:23,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:02:23,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:02:23,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076078901] [2022-07-22 20:02:23,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:02:23,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:02:23,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 20:02:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:02:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:02:23,832 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) [2022-07-22 20:02:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:02:23,844 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-22 20:02:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:02:23,846 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 [2022-07-22 20:02:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:02:23,850 INFO L225 Difference]: With dead ends: 47 [2022-07-22 20:02:23,850 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 20:02:23,852 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 [2022-07-22 20:02:23,855 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 [2022-07-22 20:02:23,856 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] [2022-07-22 20:02:23,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 20:02:23,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-22 20:02:23,875 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) [2022-07-22 20:02:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-22 20:02:23,876 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-22 20:02:23,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:02:23,876 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-22 20:02:23,876 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) [2022-07-22 20:02:23,877 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-22 20:02:23,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 20:02:23,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:02:23,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:02:23,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-22 20:02:24,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 20:02:24,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:02:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:02:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-22 20:02:24,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 20:02:24,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460204745] [2022-07-22 20:02:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:02:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 20:02:24,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 20:02:24,108 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) [2022-07-22 20:02:24,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 20:03:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:03:37,834 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 20:05:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 20:05:23,460 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-22 20:05:23,460 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 20:05:23,461 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 20:05:23,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-22 20:05:23,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:05:23,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 20:05:23,666 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 20:05:23,668 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 20:05:23,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 08:05:23 BoogieIcfgContainer [2022-07-22 20:05:23,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 20:05:23,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 20:05:23,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 20:05:23,687 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 20:05:23,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:02:22" (3/4) ... [2022-07-22 20:05:23,689 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 20:05:23,710 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 20:05:23,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 20:05:23,711 INFO L158 Benchmark]: Toolchain (without parser) took 187236.09ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 36.8MB in the beginning and 43.2MB in the end (delta: -6.4MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-22 20:05:23,711 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:05:23,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.52ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 36.5MB in the beginning and 56.2MB in the end (delta: -19.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 20:05:23,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.25ms. Allocated memory is still 75.5MB. Free memory was 56.2MB in the beginning and 54.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:05:23,712 INFO L158 Benchmark]: Boogie Preprocessor took 17.97ms. Allocated memory is still 75.5MB. Free memory was 54.2MB in the beginning and 53.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:05:23,712 INFO L158 Benchmark]: RCFGBuilder took 6083.45ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 41.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 20:05:23,713 INFO L158 Benchmark]: TraceAbstraction took 180875.50ms. Allocated memory is still 75.5MB. Free memory was 41.0MB in the beginning and 45.0MB in the end (delta: -4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 20:05:23,713 INFO L158 Benchmark]: Witness Printer took 23.06ms. Allocated memory is still 75.5MB. Free memory was 45.0MB in the beginning and 43.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 20:05:23,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.52ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 36.5MB in the beginning and 56.2MB in the end (delta: -19.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.25ms. Allocated memory is still 75.5MB. Free memory was 56.2MB in the beginning and 54.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.97ms. Allocated memory is still 75.5MB. Free memory was 54.2MB in the beginning and 53.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6083.45ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 41.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 180875.50ms. Allocated memory is still 75.5MB. Free memory was 41.0MB in the beginning and 45.0MB in the end (delta: -4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 23.06ms. Allocated memory is still 75.5MB. Free memory was 45.0MB in the beginning and 43.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. 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 > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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)=-0.6494385004043579, \result=-0.6047585606575012, x=-0.6494385004043579] [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)=-0.6494385004043579, \result=0.7966310977935791, x=-0.6494385004043579] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.6494385004043579, x=0.1097065806388855] [L102] reach_error() VAL [IN=-0.6494385004043579, x=0.1097065806388855] - 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: 180.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, 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, 74.5s 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! [2022-07-22 20:05:23,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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