./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_5.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 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:44:34,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:44:34,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:44:34,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:44:34,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:44:34,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:44:34,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:44:34,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:44:34,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:44:34,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:44:34,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:44:34,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:44:34,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:44:34,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:44:34,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:44:34,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:44:34,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:44:34,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:44:34,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:44:34,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:44:34,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:44:34,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:44:34,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:44:34,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:44:34,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:44:34,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:44:34,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:44:34,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:44:34,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:44:34,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:44:34,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:44:34,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:44:34,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:44:34,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:44:34,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:44:34,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:44:34,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:44:34,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:44:34,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:44:34,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:44:34,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:44:34,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:44:34,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:44:34,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:44:34,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:44:34,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:44:34,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:44:34,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:44:34,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:44:34,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:44:34,956 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:44:34,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:44:34,957 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:44:34,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:44:34,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:44:34,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:44:34,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:44:34,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:44:34,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:44:34,958 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:44:34,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:44:34,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:44:34,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:44:34,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:44:34,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:44:34,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:44:34,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:34,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:44:34,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:44:34,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:44:34,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:44:34,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:44:34,962 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:44:34,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:44:34,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:44:34,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:44:34,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf [2021-12-22 12:44:35,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:44:35,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:44:35,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:44:35,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:44:35,254 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:44:35,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-12-22 12:44:35,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3bb8400b/fcd06d8486f5457b8c3ea81a49bfb041/FLAGfc130c279 [2021-12-22 12:44:35,725 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:44:35,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-12-22 12:44:35,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3bb8400b/fcd06d8486f5457b8c3ea81a49bfb041/FLAGfc130c279 [2021-12-22 12:44:36,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3bb8400b/fcd06d8486f5457b8c3ea81a49bfb041 [2021-12-22 12:44:36,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:44:36,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:44:36,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:36,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:44:36,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:44:36,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c429f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36, skipping insertion in model container [2021-12-22 12:44:36,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:44:36,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:44:36,313 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_5.i[1226,1239] [2021-12-22 12:44:36,360 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_5.i[2786,2799] [2021-12-22 12:44:36,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:36,370 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:44:36,394 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_5.i[1226,1239] [2021-12-22 12:44:36,410 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_5.i[2786,2799] [2021-12-22 12:44:36,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:36,423 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:44:36,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36 WrapperNode [2021-12-22 12:44:36,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:36,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:36,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:44:36,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:44:36,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,470 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-22 12:44:36,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:36,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:44:36,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:44:36,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:44:36,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:44:36,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:44:36,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:44:36,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:44:36,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (1/1) ... [2021-12-22 12:44:36,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:36,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:44:36,546 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) [2021-12-22 12:44:36,548 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 [2021-12-22 12:44:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:44:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:44:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:44:36,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:44:36,632 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:44:36,633 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:44:36,755 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:44:36,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:44:36,760 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 12:44:36,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:36 BoogieIcfgContainer [2021-12-22 12:44:36,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:44:36,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:44:36,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:44:36,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:44:36,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:44:36" (1/3) ... [2021-12-22 12:44:36,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6567a1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:36, skipping insertion in model container [2021-12-22 12:44:36,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:36" (2/3) ... [2021-12-22 12:44:36,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6567a1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:36, skipping insertion in model container [2021-12-22 12:44:36,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:36" (3/3) ... [2021-12-22 12:44:36,774 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_5.i [2021-12-22 12:44:36,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:44:36,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:44:36,829 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:44:36,833 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 [2021-12-22 12:44:36,834 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:44:36,848 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) [2021-12-22 12:44:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:44:36,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:36,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:36,854 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:36,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:36,858 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-22 12:44:36,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:36,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569946854] [2021-12-22 12:44:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:36,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:37,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:37,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569946854] [2021-12-22 12:44:37,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569946854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:37,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:37,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 12:44:37,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814204075] [2021-12-22 12:44:37,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:37,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 12:44:37,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:37,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 12:44:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 12:44:37,081 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) [2021-12-22 12:44:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:37,098 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-22 12:44:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 12:44:37,110 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 [2021-12-22 12:44:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:37,118 INFO L225 Difference]: With dead ends: 46 [2021-12-22 12:44:37,119 INFO L226 Difference]: Without dead ends: 19 [2021-12-22 12:44:37,121 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 [2021-12-22 12:44:37,131 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 [2021-12-22 12:44:37,133 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] [2021-12-22 12:44:37,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-22 12:44:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-22 12:44:37,164 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) [2021-12-22 12:44:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-22 12:44:37,167 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-22 12:44:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:37,167 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-22 12:44:37,168 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) [2021-12-22 12:44:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-22 12:44:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:44:37,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:37,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:37,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:44:37,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:37,173 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-22 12:44:37,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:37,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603688841] [2021-12-22 12:44:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:37,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 12:44:37,211 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 12:44:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 12:44:37,256 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 12:44:37,256 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 12:44:37,258 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 12:44:37,259 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 12:44:37,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:44:37,270 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 12:44:37,273 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 12:44:37,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:44:37 BoogieIcfgContainer [2021-12-22 12:44:37,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 12:44:37,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 12:44:37,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 12:44:37,301 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 12:44:37,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:36" (3/4) ... [2021-12-22 12:44:37,303 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 12:44:37,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 12:44:37,306 INFO L158 Benchmark]: Toolchain (without parser) took 1169.45ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 48.5MB in the beginning and 69.6MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:44:37,306 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: 92.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:44:37,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.56ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 48.3MB in the beginning and 74.2MB in the end (delta: -25.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 12:44:37,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.64ms. Allocated memory is still 100.7MB. Free memory was 74.2MB in the beginning and 72.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 12:44:37,313 INFO L158 Benchmark]: Boogie Preprocessor took 43.60ms. Allocated memory is still 100.7MB. Free memory was 72.2MB in the beginning and 71.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:44:37,313 INFO L158 Benchmark]: RCFGBuilder took 246.01ms. Allocated memory is still 100.7MB. Free memory was 71.1MB in the beginning and 60.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 12:44:37,314 INFO L158 Benchmark]: TraceAbstraction took 536.34ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 70.5MB in the end (delta: -10.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:44:37,314 INFO L158 Benchmark]: Witness Printer took 3.44ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 69.6MB in the end (delta: 644.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 12:44:37,320 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 83.9MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: 92.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.56ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 48.3MB in the beginning and 74.2MB in the end (delta: -25.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.64ms. Allocated memory is still 100.7MB. Free memory was 74.2MB in the beginning and 72.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.60ms. Allocated memory is still 100.7MB. Free memory was 72.2MB in the beginning and 71.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 246.01ms. Allocated memory is still 100.7MB. Free memory was 71.1MB in the beginning and 60.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 536.34ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 70.5MB in the end (delta: -10.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.44ms. Allocated memory is still 100.7MB. Free memory was 70.3MB in the beginning and 69.6MB in the end (delta: 644.9kB). 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 > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [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 [2021-12-22 12:44:37,367 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_1+newton_1_5.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 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:44:39,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:44:39,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:44:39,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:44:39,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:44:39,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:44:39,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:44:39,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:44:39,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:44:39,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:44:39,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:44:39,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:44:39,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:44:39,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:44:39,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:44:39,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:44:39,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:44:39,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:44:39,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:44:39,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:44:39,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:44:39,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:44:39,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:44:39,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:44:39,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:44:39,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:44:39,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:44:39,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:44:39,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:44:39,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:44:39,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:44:39,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:44:39,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:44:39,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:44:39,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:44:39,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:44:39,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:44:39,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:44:39,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:44:39,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:44:39,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:44:39,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 12:44:39,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:44:39,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:44:39,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:44:39,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:44:39,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:44:39,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:44:39,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:44:39,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:44:39,448 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:44:39,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:44:39,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:44:39,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:44:39,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:44:39,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:44:39,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:44:39,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:44:39,451 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 12:44:39,451 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 12:44:39,451 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 12:44:39,451 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:44:39,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:44:39,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:44:39,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:44:39,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:44:39,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:44:39,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:44:39,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:39,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:44:39,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:44:39,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:44:39,453 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 12:44:39,454 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 12:44:39,454 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:44:39,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:44:39,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:44:39,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:44:39,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 12:44:39,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fd336a0cf083f3890b8c868f630a501a442e53f25a6db757ae043988dd949bf [2021-12-22 12:44:39,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:44:39,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:44:39,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:44:39,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:44:39,767 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:44:39,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-12-22 12:44:39,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f28e5a94/0bfc71697d88473fa495e71a935eef6b/FLAG2ece1e240 [2021-12-22 12:44:40,297 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:44:40,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_1_5.i [2021-12-22 12:44:40,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f28e5a94/0bfc71697d88473fa495e71a935eef6b/FLAG2ece1e240 [2021-12-22 12:44:40,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f28e5a94/0bfc71697d88473fa495e71a935eef6b [2021-12-22 12:44:40,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:44:40,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:44:40,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:40,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:44:40,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:44:40,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62317fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40, skipping insertion in model container [2021-12-22 12:44:40,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:44:40,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:44:40,506 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_5.i[1226,1239] [2021-12-22 12:44:40,528 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_5.i[2786,2799] [2021-12-22 12:44:40,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:40,538 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:44:40,588 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_5.i[1226,1239] [2021-12-22 12:44:40,603 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_5.i[2786,2799] [2021-12-22 12:44:40,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:44:40,628 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:44:40,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40 WrapperNode [2021-12-22 12:44:40,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:44:40,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:40,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:44:40,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:44:40,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,681 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-22 12:44:40,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:44:40,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:44:40,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:44:40,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:44:40,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:44:40,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:44:40,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:44:40,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:44:40,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (1/1) ... [2021-12-22 12:44:40,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:44:40,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:44:40,773 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) [2021-12-22 12:44:40,795 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 [2021-12-22 12:44:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:44:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 12:44:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:44:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:44:40,882 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:44:40,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:44:47,086 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:44:47,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:44:47,091 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 12:44:47,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:47 BoogieIcfgContainer [2021-12-22 12:44:47,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:44:47,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:44:47,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:44:47,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:44:47,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:44:40" (1/3) ... [2021-12-22 12:44:47,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76de2531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:47, skipping insertion in model container [2021-12-22 12:44:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:44:40" (2/3) ... [2021-12-22 12:44:47,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76de2531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:44:47, skipping insertion in model container [2021-12-22 12:44:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:47" (3/3) ... [2021-12-22 12:44:47,100 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_1_5.i [2021-12-22 12:44:47,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:44:47,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:44:47,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:44:47,149 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 [2021-12-22 12:44:47,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:44:47,161 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) [2021-12-22 12:44:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:44:47,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:47,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:47,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:47,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-22 12:44:47,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 12:44:47,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995843669] [2021-12-22 12:44:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:47,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 12:44:47,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 12:44:47,189 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) [2021-12-22 12:44:47,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 12:44:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:48,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 12:44:48,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:44:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:48,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 12:44:48,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 12:44:48,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995843669] [2021-12-22 12:44:48,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995843669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:48,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:48,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 12:44:48,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954353985] [2021-12-22 12:44:48,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:48,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 12:44:48,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 12:44:48,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 12:44:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 12:44:48,242 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) [2021-12-22 12:44:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:48,259 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-12-22 12:44:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 12:44:48,261 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 [2021-12-22 12:44:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:48,268 INFO L225 Difference]: With dead ends: 46 [2021-12-22 12:44:48,268 INFO L226 Difference]: Without dead ends: 19 [2021-12-22 12:44:48,270 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 [2021-12-22 12:44:48,276 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 [2021-12-22 12:44:48,278 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] [2021-12-22 12:44:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-22 12:44:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-22 12:44:48,301 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) [2021-12-22 12:44:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-22 12:44:48,303 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-22 12:44:48,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:48,303 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-22 12:44:48,303 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) [2021-12-22 12:44:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-22 12:44:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 12:44:48,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:48,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:48,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 12:44:48,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 12:44:48,518 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:48,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-22 12:44:48,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 12:44:48,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334167364] [2021-12-22 12:44:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:48,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 12:44:48,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 12:44:48,521 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) [2021-12-22 12:44:48,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 12:45:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 12:45:25,061 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 12:45:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 12:45:40,837 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-22 12:45:40,837 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 12:45:40,838 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-22 12:45:40,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-22 12:45:40,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 12:45:41,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 12:45:41,044 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 12:45:41,047 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 12:45:41,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:45:41 BoogieIcfgContainer [2021-12-22 12:45:41,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 12:45:41,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 12:45:41,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 12:45:41,075 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 12:45:41,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:44:47" (3/4) ... [2021-12-22 12:45:41,077 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-22 12:45:41,106 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 12:45:41,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 12:45:41,107 INFO L158 Benchmark]: Toolchain (without parser) took 60770.73ms. Allocated memory is still 56.6MB. Free memory was 42.3MB in the beginning and 27.0MB in the end (delta: 15.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-12-22 12:45:41,107 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 46.1MB. Free memory is still 29.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:45:41,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.76ms. Allocated memory is still 56.6MB. Free memory was 42.1MB in the beginning and 39.7MB in the end (delta: 2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 12:45:41,108 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.48ms. Allocated memory is still 56.6MB. Free memory was 39.6MB in the beginning and 37.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:45:41,108 INFO L158 Benchmark]: Boogie Preprocessor took 51.63ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 36.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 12:45:41,108 INFO L158 Benchmark]: RCFGBuilder took 6358.00ms. Allocated memory is still 56.6MB. Free memory was 36.2MB in the beginning and 39.3MB in the end (delta: -3.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-12-22 12:45:41,109 INFO L158 Benchmark]: TraceAbstraction took 53979.18ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 28.8MB in the end (delta: 9.9MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2021-12-22 12:45:41,109 INFO L158 Benchmark]: Witness Printer took 31.85ms. Allocated memory is still 56.6MB. Free memory was 28.8MB in the beginning and 27.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 12:45:41,111 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 46.1MB. Free memory is still 29.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.76ms. Allocated memory is still 56.6MB. Free memory was 42.1MB in the beginning and 39.7MB in the end (delta: 2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.48ms. Allocated memory is still 56.6MB. Free memory was 39.6MB in the beginning and 37.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.63ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 36.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6358.00ms. Allocated memory is still 56.6MB. Free memory was 36.2MB in the beginning and 39.3MB in the end (delta: -3.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 53979.18ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 28.8MB in the end (delta: 9.9MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Witness Printer took 31.85ms. Allocated memory is still 56.6MB. Free memory was 28.8MB in the beginning and 27.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [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)=-0.7001767754554749, \result=-0.644385576248169, x=-0.7001767754554749] [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)=-0.7001767754554749, \result=0.7650542259216309, x=-0.7001767754554749] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.7001767754554749, x=0.1420975923538208] [L102] reach_error() VAL [IN=-0.7001767754554749, x=0.1420975923538208] - 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: 53.9s, 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, 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, 37.3s 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! [2021-12-22 12:45:41,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE