./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_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 a9825b79dc05674941f0d6760d5ee353656990fb98a94517f1752c6b08ae8db0 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:56:08,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:56:08,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:56:08,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:56:08,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:56:08,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:56:08,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:56:08,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:56:08,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:56:08,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:56:08,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:56:08,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:56:08,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:56:08,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:56:08,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:56:08,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:56:08,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:56:08,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:56:08,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:56:08,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:56:08,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:56:08,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:56:08,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:56:08,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:56:08,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:56:08,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:56:08,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:56:08,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:56:08,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:56:08,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:56:08,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:56:08,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:56:08,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:56:08,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:56:08,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:56:08,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:56:08,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:56:08,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:56:08,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:56:08,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:56:08,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:56:08,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:56:08,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:56:08,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:56:08,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:56:08,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:56:08,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:56:08,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:56:08,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:56:08,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:56:08,939 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:56:08,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:56:08,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:56:08,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:56:08,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:56:08,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:56:08,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:56:08,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:56:08,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:56:08,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:56:08,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:56:08,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:56:08,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:56:08,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:56:08,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:56:08,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:56:08,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:56:08,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:56:08,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:56:08,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:56:08,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:56:08,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:56:08,944 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:56:08,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:56:08,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:56:08,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:56:08,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9825b79dc05674941f0d6760d5ee353656990fb98a94517f1752c6b08ae8db0 [2021-12-15 11:56:09,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:56:09,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:56:09,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:56:09,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:56:09,164 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:56:09,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_6.i [2021-12-15 11:56:09,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69633da5/a98a145eb6724d9faf559b728b23c773/FLAGce12fd69f [2021-12-15 11:56:09,499 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:56:09,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_6.i [2021-12-15 11:56:09,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69633da5/a98a145eb6724d9faf559b728b23c773/FLAGce12fd69f [2021-12-15 11:56:09,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69633da5/a98a145eb6724d9faf559b728b23c773 [2021-12-15 11:56:09,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:56:09,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:56:09,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:56:09,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:56:09,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:56:09,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:56:09" (1/1) ... [2021-12-15 11:56:09,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46adf44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:09, skipping insertion in model container [2021-12-15 11:56:09,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:56:09" (1/1) ... [2021-12-15 11:56:09,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:56:10,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:56:10,145 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_6.i[1226,1239] [2021-12-15 11:56:10,175 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_6.i[2820,2833] [2021-12-15 11:56:10,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:56:10,182 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:56:10,194 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_6.i[1226,1239] [2021-12-15 11:56:10,213 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_6.i[2820,2833] [2021-12-15 11:56:10,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:56:10,227 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:56:10,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10 WrapperNode [2021-12-15 11:56:10,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:56:10,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:56:10,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:56:10,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:56:10,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,263 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-15 11:56:10,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:56:10,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:56:10,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:56:10,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:56:10,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:56:10,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:56:10,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:56:10,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:56:10,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (1/1) ... [2021-12-15 11:56:10,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:56:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:56:10,324 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) [2021-12-15 11:56:10,347 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 [2021-12-15 11:56:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:56:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:56:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:56:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:56:10,405 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:56:10,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:56:10,524 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:56:10,527 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:56:10,528 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:56:10,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:56:10 BoogieIcfgContainer [2021-12-15 11:56:10,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:56:10,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:56:10,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:56:10,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:56:10,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:56:09" (1/3) ... [2021-12-15 11:56:10,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d646e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:56:10, skipping insertion in model container [2021-12-15 11:56:10,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:10" (2/3) ... [2021-12-15 11:56:10,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d646e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:56:10, skipping insertion in model container [2021-12-15 11:56:10,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:56:10" (3/3) ... [2021-12-15 11:56:10,534 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_6.i [2021-12-15 11:56:10,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:56:10,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:56:10,563 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:56:10,568 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:56:10,568 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:56:10,576 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) [2021-12-15 11:56:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 11:56:10,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:56:10,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:56:10,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:56:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:56:10,583 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-15 11:56:10,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:56:10,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190032165] [2021-12-15 11:56:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:56:10,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:56:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:56:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:56:10,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:56:10,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190032165] [2021-12-15 11:56:10,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190032165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:56:10,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:56:10,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 11:56:10,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318994854] [2021-12-15 11:56:10,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:56:10,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 11:56:10,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:56:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 11:56:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 11:56:10,746 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) [2021-12-15 11:56:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:56:10,759 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-15 11:56:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 11:56:10,761 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 [2021-12-15 11:56:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:56:10,765 INFO L225 Difference]: With dead ends: 47 [2021-12-15 11:56:10,765 INFO L226 Difference]: Without dead ends: 19 [2021-12-15 11:56:10,768 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:56:10,770 INFO L933 BasicCegarLoop]: 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 [2021-12-15 11:56:10,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:56:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-15 11:56:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-15 11:56:10,791 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) [2021-12-15 11:56:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-15 11:56:10,793 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-15 11:56:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:56:10,793 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-15 11:56:10,794 INFO L471 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) [2021-12-15 11:56:10,794 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-15 11:56:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 11:56:10,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:56:10,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:56:10,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:56:10,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:56:10,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:56:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-15 11:56:10,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:56:10,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116181977] [2021-12-15 11:56:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:56:10,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:56:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 11:56:10,824 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 11:56:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 11:56:10,841 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 11:56:10,844 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 11:56:10,845 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-15 11:56:10,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-15 11:56:10,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 11:56:10,850 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 11:56:10,851 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 11:56:10,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:56:10 BoogieIcfgContainer [2021-12-15 11:56:10,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 11:56:10,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 11:56:10,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 11:56:10,875 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 11:56:10,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:56:10" (3/4) ... [2021-12-15 11:56:10,877 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 11:56:10,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 11:56:10,880 INFO L158 Benchmark]: Toolchain (without parser) took 932.62ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 77.0MB in the beginning and 75.7MB in the end (delta: 1.3MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-12-15 11:56:10,880 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:56:10,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.37ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 76.6MB in the beginning and 113.2MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 11:56:10,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.97ms. Allocated memory is still 138.4MB. Free memory was 113.2MB in the beginning and 111.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:56:10,885 INFO L158 Benchmark]: Boogie Preprocessor took 29.08ms. Allocated memory is still 138.4MB. Free memory was 110.8MB in the beginning and 109.8MB in the end (delta: 993.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:56:10,885 INFO L158 Benchmark]: RCFGBuilder took 235.56ms. Allocated memory is still 138.4MB. Free memory was 109.8MB in the beginning and 99.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:56:10,885 INFO L158 Benchmark]: TraceAbstraction took 344.23ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 76.2MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:56:10,886 INFO L158 Benchmark]: Witness Printer took 2.90ms. Allocated memory is still 138.4MB. Free memory was 76.2MB in the beginning and 75.7MB in the end (delta: 558.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:56:10,891 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 104.9MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.37ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 76.6MB in the beginning and 113.2MB in the end (delta: -36.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.97ms. Allocated memory is still 138.4MB. Free memory was 113.2MB in the beginning and 111.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.08ms. Allocated memory is still 138.4MB. Free memory was 110.8MB in the beginning and 109.8MB in the end (delta: 993.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 235.56ms. Allocated memory is still 138.4MB. Free memory was 109.8MB in the beginning and 99.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 344.23ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 76.2MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 2.90ms. Allocated memory is still 138.4MB. Free memory was 76.2MB in the beginning and 75.7MB in the end (delta: 558.0kB). 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 - 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: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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 [2021-12-15 11:56:10,920 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_3+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 a9825b79dc05674941f0d6760d5ee353656990fb98a94517f1752c6b08ae8db0 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:56:12,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:56:12,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:56:12,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:56:12,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:56:12,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:56:12,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:56:12,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:56:12,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:56:12,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:56:12,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:56:12,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:56:12,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:56:12,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:56:12,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:56:12,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:56:12,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:56:12,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:56:12,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:56:12,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:56:12,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:56:12,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:56:12,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:56:12,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:56:12,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:56:12,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:56:12,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:56:12,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:56:12,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:56:12,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:56:12,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:56:12,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:56:12,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:56:12,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:56:12,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:56:12,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:56:12,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:56:12,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:56:12,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:56:12,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:56:12,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:56:12,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:56:12,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:56:12,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:56:12,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:56:12,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:56:12,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:56:12,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:56:12,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:56:12,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:56:12,678 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:56:12,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:56:12,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:56:12,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:56:12,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:56:12,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:56:12,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:56:12,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:56:12,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:56:12,680 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:56:12,680 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:56:12,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:56:12,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:56:12,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:56:12,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:56:12,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:56:12,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:56:12,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:56:12,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:56:12,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:56:12,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:56:12,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:56:12,682 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:56:12,682 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:56:12,682 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:56:12,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:56:12,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:56:12,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:56:12,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:56:12,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9825b79dc05674941f0d6760d5ee353656990fb98a94517f1752c6b08ae8db0 [2021-12-15 11:56:12,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:56:12,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:56:12,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:56:12,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:56:12,981 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:56:12,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_6.i [2021-12-15 11:56:13,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4432d62e9/42ec0f53658f4b69803c3b95c0a28382/FLAGbe7110e3b [2021-12-15 11:56:13,493 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:56:13,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_6.i [2021-12-15 11:56:13,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4432d62e9/42ec0f53658f4b69803c3b95c0a28382/FLAGbe7110e3b [2021-12-15 11:56:14,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4432d62e9/42ec0f53658f4b69803c3b95c0a28382 [2021-12-15 11:56:14,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:56:14,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:56:14,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:56:14,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:56:14,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:56:14,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1971ed88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14, skipping insertion in model container [2021-12-15 11:56:14,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:56:14,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:56:14,249 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_6.i[1226,1239] [2021-12-15 11:56:14,270 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_6.i[2820,2833] [2021-12-15 11:56:14,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:56:14,316 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:56:14,344 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_6.i[1226,1239] [2021-12-15 11:56:14,361 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_6.i[2820,2833] [2021-12-15 11:56:14,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:56:14,378 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:56:14,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14 WrapperNode [2021-12-15 11:56:14,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:56:14,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:56:14,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:56:14,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:56:14,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,440 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-15 11:56:14,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:56:14,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:56:14,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:56:14,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:56:14,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:56:14,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:56:14,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:56:14,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:56:14,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (1/1) ... [2021-12-15 11:56:14,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:56:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:56:14,561 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) [2021-12-15 11:56:14,585 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 [2021-12-15 11:56:14,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:56:14,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:56:14,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:56:14,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:56:14,652 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:56:14,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:56:19,764 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:56:19,768 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:56:19,768 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:56:19,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:56:19 BoogieIcfgContainer [2021-12-15 11:56:19,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:56:19,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:56:19,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:56:19,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:56:19,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:56:14" (1/3) ... [2021-12-15 11:56:19,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60217ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:56:19, skipping insertion in model container [2021-12-15 11:56:19,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:14" (2/3) ... [2021-12-15 11:56:19,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60217ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:56:19, skipping insertion in model container [2021-12-15 11:56:19,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:56:19" (3/3) ... [2021-12-15 11:56:19,774 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_6.i [2021-12-15 11:56:19,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:56:19,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:56:19,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:56:19,812 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:56:19,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:56:19,838 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) [2021-12-15 11:56:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 11:56:19,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:56:19,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:56:19,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:56:19,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:56:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-15 11:56:19,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:56:19,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295695934] [2021-12-15 11:56:19,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:56:19,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:56:19,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:56:19,873 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) [2021-12-15 11:56:19,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:56:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:56:20,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 11:56:20,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 11:56:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:56:20,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 11:56:20,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 11:56:20,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295695934] [2021-12-15 11:56:20,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295695934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:56:20,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:56:20,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 11:56:20,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773886997] [2021-12-15 11:56:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:56:20,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 11:56:20,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 11:56:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 11:56:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 11:56:20,989 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) [2021-12-15 11:56:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:56:21,000 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-15 11:56:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 11:56:21,001 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 [2021-12-15 11:56:21,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:56:21,006 INFO L225 Difference]: With dead ends: 47 [2021-12-15 11:56:21,006 INFO L226 Difference]: Without dead ends: 19 [2021-12-15 11:56:21,009 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:56:21,012 INFO L933 BasicCegarLoop]: 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 [2021-12-15 11:56:21,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:56:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-15 11:56:21,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-15 11:56:21,030 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) [2021-12-15 11:56:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-15 11:56:21,032 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-15 11:56:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:56:21,032 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-15 11:56:21,032 INFO L471 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) [2021-12-15 11:56:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-15 11:56:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 11:56:21,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:56:21,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:56:21,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:56:21,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:56:21,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:56:21,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:56:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-15 11:56:21,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:56:21,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324866502] [2021-12-15 11:56:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:56:21,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:56:21,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:56:21,268 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) [2021-12-15 11:56:21,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 11:56:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 11:56:27,547 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 11:56:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 11:56:44,829 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-15 11:56:44,829 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 11:56:44,830 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-15 11:56:44,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-15 11:56:44,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 11:56:45,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:56:45,035 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 11:56:45,037 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 11:56:45,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:56:45 BoogieIcfgContainer [2021-12-15 11:56:45,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 11:56:45,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 11:56:45,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 11:56:45,081 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 11:56:45,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:56:19" (3/4) ... [2021-12-15 11:56:45,082 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-15 11:56:45,106 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 11:56:45,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 11:56:45,107 INFO L158 Benchmark]: Toolchain (without parser) took 31072.92ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 45.0MB in the beginning and 67.4MB in the end (delta: -22.4MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2021-12-15 11:56:45,107 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 45.8MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:56:45,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.18ms. Allocated memory is still 65.0MB. Free memory was 44.8MB in the beginning and 46.6MB in the end (delta: -1.8MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-12-15 11:56:45,108 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.79ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 44.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:56:45,108 INFO L158 Benchmark]: Boogie Preprocessor took 53.50ms. Allocated memory is still 65.0MB. Free memory was 44.7MB in the beginning and 43.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:56:45,109 INFO L158 Benchmark]: RCFGBuilder took 5273.33ms. Allocated memory is still 65.0MB. Free memory was 43.2MB in the beginning and 33.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:56:45,110 INFO L158 Benchmark]: TraceAbstraction took 25300.49ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 32.5MB in the beginning and 69.5MB in the end (delta: -36.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-12-15 11:56:45,110 INFO L158 Benchmark]: Witness Printer took 26.22ms. Allocated memory is still 88.1MB. Free memory was 69.5MB in the beginning and 67.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:56:45,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 45.8MB in the beginning and 45.8MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.18ms. Allocated memory is still 65.0MB. Free memory was 44.8MB in the beginning and 46.6MB in the end (delta: -1.8MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.79ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 44.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.50ms. Allocated memory is still 65.0MB. Free memory was 44.7MB in the beginning and 43.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 5273.33ms. Allocated memory is still 65.0MB. Free memory was 43.2MB in the beginning and 33.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 25300.49ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 32.5MB in the beginning and 69.5MB in the end (delta: -36.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 26.22ms. Allocated memory is still 88.1MB. Free memory was 69.5MB in the beginning and 67.4MB in the end (delta: 2.1MB). 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 > -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)=-0.9593865871429443, \result=-0.8191345930099487, x=-0.9593865871429443] [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)=-0.9593865871429443, \result=0.576170802116394, x=-0.9593865871429443] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.9593865871429443, x=0.46230053901672363] [L102] reach_error() VAL [IN=-0.9593865871429443, x=0.46230053901672363] - 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: 25.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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, 7.2s 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! [2021-12-15 11:56:45,262 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