./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_1+newton_1_7.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 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:51:15,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:51:15,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:51:15,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:51:15,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:51:15,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:51:15,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:51:15,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:51:15,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:51:15,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:51:15,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:51:15,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:51:15,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:51:15,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:51:15,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:51:15,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:51:15,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:51:15,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:51:15,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:51:15,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:51:15,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:51:15,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:51:15,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:51:15,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:51:15,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:51:15,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:51:15,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:51:15,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:51:15,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:51:15,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:51:15,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:51:15,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:51:15,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:51:15,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:51:15,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:51:15,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:51:15,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:51:15,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:51:15,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:51:15,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:51:15,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:51:15,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:51:15,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:51:15,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:51:15,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:51:15,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:51:15,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:51:15,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:51:15,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:51:15,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:51:15,983 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:51:15,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:51:15,984 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:51:15,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:51:15,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:51:15,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:51:15,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:51:15,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:51:15,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:51:15,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:51:15,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:51:15,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:51:15,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:51:15,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:51:15,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:51:15,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:51:15,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:51:15,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:51:15,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:51:15,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:51:15,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:51:15,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:51:15,989 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:51:15,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:51:15,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:51:15,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:51:15,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 [2021-12-14 15:51:16,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:51:16,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:51:16,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:51:16,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:51:16,198 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:51:16,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-12-14 15:51:16,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb761aeb/97f0d8fdc26448b1b10aa6b71d838f09/FLAG8061ac791 [2021-12-14 15:51:16,580 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:51:16,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-12-14 15:51:16,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb761aeb/97f0d8fdc26448b1b10aa6b71d838f09/FLAG8061ac791 [2021-12-14 15:51:16,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bb761aeb/97f0d8fdc26448b1b10aa6b71d838f09 [2021-12-14 15:51:16,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:51:16,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:51:16,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:51:16,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:51:16,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:51:16,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0208c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16, skipping insertion in model container [2021-12-14 15:51:16,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:51:16,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:51:16,776 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_1+newton_1_7.i[1226,1239] [2021-12-14 15:51:16,794 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_1+newton_1_7.i[2786,2799] [2021-12-14 15:51:16,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:51:16,801 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:51:16,811 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_1+newton_1_7.i[1226,1239] [2021-12-14 15:51:16,820 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_1+newton_1_7.i[2786,2799] [2021-12-14 15:51:16,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:51:16,830 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:51:16,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16 WrapperNode [2021-12-14 15:51:16,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:51:16,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:51:16,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:51:16,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:51:16,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,861 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-14 15:51:16,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:51:16,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:51:16,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:51:16,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:51:16,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:51:16,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:51:16,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:51:16,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:51:16,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (1/1) ... [2021-12-14 15:51:16,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:51:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:51:16,908 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) [2021-12-14 15:51:16,922 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 [2021-12-14 15:51:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:51:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:51:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:51:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:51:16,997 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:51:16,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:51:17,100 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:51:17,105 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:51:17,106 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:51:17,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:17 BoogieIcfgContainer [2021-12-14 15:51:17,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:51:17,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:51:17,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:51:17,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:51:17,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:51:16" (1/3) ... [2021-12-14 15:51:17,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767ee6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:17, skipping insertion in model container [2021-12-14 15:51:17,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:16" (2/3) ... [2021-12-14 15:51:17,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767ee6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:17, skipping insertion in model container [2021-12-14 15:51:17,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:17" (3/3) ... [2021-12-14 15:51:17,114 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_7.i [2021-12-14 15:51:17,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:51:17,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:51:17,152 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:51:17,157 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 [2021-12-14 15:51:17,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:51:17,168 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) [2021-12-14 15:51:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:51:17,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:17,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:17,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:17,178 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-14 15:51:17,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:17,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616339806] [2021-12-14 15:51:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:17,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:17,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:17,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616339806] [2021-12-14 15:51:17,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616339806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:17,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:17,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 15:51:17,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997118915] [2021-12-14 15:51:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:17,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 15:51:17,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 15:51:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:51:17,387 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) [2021-12-14 15:51:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:17,406 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-14 15:51:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 15:51:17,408 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 [2021-12-14 15:51:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:17,415 INFO L225 Difference]: With dead ends: 46 [2021-12-14 15:51:17,415 INFO L226 Difference]: Without dead ends: 19 [2021-12-14 15:51:17,419 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 [2021-12-14 15:51:17,422 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 [2021-12-14 15:51:17,423 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] [2021-12-14 15:51:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-14 15:51:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-14 15:51:17,447 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) [2021-12-14 15:51:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-14 15:51:17,449 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-14 15:51:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:17,450 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-14 15:51:17,450 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) [2021-12-14 15:51:17,450 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-14 15:51:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:51:17,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:17,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:17,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:51:17,451 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:17,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-14 15:51:17,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:17,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782165078] [2021-12-14 15:51:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:17,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:51:17,473 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 15:51:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:51:17,511 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 15:51:17,512 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 15:51:17,513 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-14 15:51:17,514 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-14 15:51:17,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:51:17,517 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 15:51:17,519 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 15:51:17,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:51:17 BoogieIcfgContainer [2021-12-14 15:51:17,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 15:51:17,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 15:51:17,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 15:51:17,536 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 15:51:17,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:17" (3/4) ... [2021-12-14 15:51:17,539 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 15:51:17,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 15:51:17,539 INFO L158 Benchmark]: Toolchain (without parser) took 938.92ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 68.8MB in the beginning and 85.0MB in the end (delta: -16.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-14 15:51:17,540 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 98.6MB. Free memory is still 55.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:51:17,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.39ms. Allocated memory is still 98.6MB. Free memory was 68.6MB in the beginning and 73.1MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 15:51:17,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.19ms. Allocated memory is still 98.6MB. Free memory was 73.1MB in the beginning and 71.2MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 15:51:17,541 INFO L158 Benchmark]: Boogie Preprocessor took 18.71ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 70.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:51:17,542 INFO L158 Benchmark]: RCFGBuilder took 225.57ms. Allocated memory is still 98.6MB. Free memory was 70.1MB in the beginning and 59.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 15:51:17,542 INFO L158 Benchmark]: TraceAbstraction took 426.42ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 59.0MB in the beginning and 85.6MB in the end (delta: -26.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 15:51:17,543 INFO L158 Benchmark]: Witness Printer took 3.38ms. Allocated memory is still 119.5MB. Free memory was 85.6MB in the beginning and 85.0MB in the end (delta: 615.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 15:51:17,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 98.6MB. Free memory is still 55.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.39ms. Allocated memory is still 98.6MB. Free memory was 68.6MB in the beginning and 73.1MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.19ms. Allocated memory is still 98.6MB. Free memory was 73.1MB in the beginning and 71.2MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.71ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 70.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 225.57ms. Allocated memory is still 98.6MB. Free memory was 70.1MB in the beginning and 59.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 426.42ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 59.0MB in the beginning and 85.6MB in the end (delta: -26.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.38ms. Allocated memory is still 119.5MB. Free memory was 85.6MB in the beginning and 85.0MB in the end (delta: 615.7kB). 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 > -1.4f && IN < 1.4f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [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: 0.4s, 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, 0.1s 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 [2021-12-14 15:51:17,582 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_1+newton_1_7.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 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:51:19,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:51:19,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:51:19,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:51:19,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:51:19,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:51:19,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:51:19,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:51:19,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:51:19,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:51:19,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:51:19,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:51:19,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:51:19,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:51:19,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:51:19,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:51:19,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:51:19,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:51:19,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:51:19,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:51:19,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:51:19,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:51:19,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:51:19,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:51:19,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:51:19,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:51:19,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:51:19,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:51:19,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:51:19,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:51:19,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:51:19,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:51:19,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:51:19,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:51:19,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:51:19,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:51:19,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:51:19,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:51:19,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:51:19,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:51:19,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:51:19,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 15:51:19,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:51:19,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:51:19,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:51:19,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:51:19,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:51:19,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:51:19,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:51:19,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:51:19,564 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:51:19,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:51:19,565 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:51:19,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:51:19,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:51:19,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:51:19,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:51:19,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:51:19,566 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 15:51:19,566 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 15:51:19,567 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 15:51:19,567 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:51:19,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:51:19,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:51:19,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:51:19,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:51:19,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:51:19,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:51:19,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:51:19,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:51:19,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:51:19,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:51:19,569 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 15:51:19,569 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 15:51:19,569 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:51:19,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:51:19,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:51:19,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:51:19,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 15:51:19,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f72f5580e8ee240383987c5e02610bf09387ce8fa780da3ef6f20ea144f2408 [2021-12-14 15:51:19,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:51:19,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:51:19,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:51:19,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:51:19,873 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:51:19,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-12-14 15:51:19,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e596962/be2118e00922457bbafd91f0406840e9/FLAG35fb6131e [2021-12-14 15:51:20,356 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:51:20,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_7.i [2021-12-14 15:51:20,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e596962/be2118e00922457bbafd91f0406840e9/FLAG35fb6131e [2021-12-14 15:51:20,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9e596962/be2118e00922457bbafd91f0406840e9 [2021-12-14 15:51:20,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:51:20,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:51:20,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:51:20,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:51:20,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:51:20,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a40278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20, skipping insertion in model container [2021-12-14 15:51:20,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:51:20,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:51:20,561 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_1+newton_1_7.i[1226,1239] [2021-12-14 15:51:20,636 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_1+newton_1_7.i[2786,2799] [2021-12-14 15:51:20,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:51:20,650 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:51:20,664 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_1+newton_1_7.i[1226,1239] [2021-12-14 15:51:20,684 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_1+newton_1_7.i[2786,2799] [2021-12-14 15:51:20,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:51:20,701 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:51:20,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20 WrapperNode [2021-12-14 15:51:20,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:51:20,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:51:20,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:51:20,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:51:20,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,752 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-14 15:51:20,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:51:20,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:51:20,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:51:20,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:51:20,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:51:20,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:51:20,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:51:20,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:51:20,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (1/1) ... [2021-12-14 15:51:20,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:51:20,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:51:20,836 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) [2021-12-14 15:51:20,859 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 [2021-12-14 15:51:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:51:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 15:51:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:51:20,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:51:20,931 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:51:20,932 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:51:26,837 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:51:26,842 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:51:26,842 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 15:51:26,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:26 BoogieIcfgContainer [2021-12-14 15:51:26,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:51:26,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:51:26,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:51:26,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:51:26,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:51:20" (1/3) ... [2021-12-14 15:51:26,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7507b529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:26, skipping insertion in model container [2021-12-14 15:51:26,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:20" (2/3) ... [2021-12-14 15:51:26,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7507b529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:26, skipping insertion in model container [2021-12-14 15:51:26,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:26" (3/3) ... [2021-12-14 15:51:26,850 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_7.i [2021-12-14 15:51:26,853 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:51:26,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:51:26,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:51:26,900 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 [2021-12-14 15:51:26,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:51:26,909 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) [2021-12-14 15:51:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:51:26,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:26,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:26,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-14 15:51:26,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 15:51:26,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197099220] [2021-12-14 15:51:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:26,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 15:51:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 15:51:26,935 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) [2021-12-14 15:51:26,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 15:51:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:27,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 15:51:27,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:51:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:51:27,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 15:51:27,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 15:51:27,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197099220] [2021-12-14 15:51:27,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197099220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:27,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:27,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 15:51:27,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066309524] [2021-12-14 15:51:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:27,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 15:51:27,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 15:51:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 15:51:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 15:51:28,012 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) [2021-12-14 15:51:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:28,024 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-14 15:51:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 15:51:28,026 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 [2021-12-14 15:51:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:28,032 INFO L225 Difference]: With dead ends: 46 [2021-12-14 15:51:28,032 INFO L226 Difference]: Without dead ends: 19 [2021-12-14 15:51:28,034 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 [2021-12-14 15:51:28,037 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 [2021-12-14 15:51:28,038 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] [2021-12-14 15:51:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-14 15:51:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-14 15:51:28,061 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) [2021-12-14 15:51:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-14 15:51:28,062 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-14 15:51:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:28,063 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-14 15:51:28,063 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) [2021-12-14 15:51:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-14 15:51:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-14 15:51:28,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:28,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:51:28,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 15:51:28,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 15:51:28,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-14 15:51:28,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 15:51:28,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847394208] [2021-12-14 15:51:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:28,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 15:51:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 15:51:28,287 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) [2021-12-14 15:51:28,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 15:51:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 15:51:32,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.