./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_2+newton_1_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 b3e6d6197033d1263350baa937a3f4840980ed64c6f14711d69f2cfe01c9814f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:07:18,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:07:18,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:07:18,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:07:18,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:07:18,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:07:18,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:07:18,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:07:18,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:07:18,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:07:18,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:07:18,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:07:18,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:07:18,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:07:18,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:07:18,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:07:18,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:07:18,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:07:18,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:07:18,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:07:18,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:07:18,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:07:18,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:07:18,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:07:18,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:07:18,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:07:18,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:07:18,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:07:18,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:07:18,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:07:18,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:07:18,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:07:18,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:07:18,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:07:18,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:07:18,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:07:18,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:07:18,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:07:18,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:07:18,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:07:18,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:07:18,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:07:18,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:07:18,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:07:18,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:07:18,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:07:18,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:07:18,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:07:18,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:07:18,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:07:18,287 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:07:18,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:07:18,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:07:18,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:07:18,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:07:18,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:07:18,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:07:18,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:07:18,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:07:18,289 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:07:18,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:07:18,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:07:18,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:07:18,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:07:18,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:07:18,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:07:18,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:07:18,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:07:18,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:07:18,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:07:18,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:07:18,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:07:18,291 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:07:18,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:07:18,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:07:18,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:07:18,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e6d6197033d1263350baa937a3f4840980ed64c6f14711d69f2cfe01c9814f [2021-12-16 02:07:18,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:07:18,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:07:18,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:07:18,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:07:18,520 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:07:18,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_5.i [2021-12-16 02:07:18,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fecd9ac4/481ead7b3d3f48b686c8f97843457ff5/FLAG71fb3ec7a [2021-12-16 02:07:18,923 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:07:18,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i [2021-12-16 02:07:18,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fecd9ac4/481ead7b3d3f48b686c8f97843457ff5/FLAG71fb3ec7a [2021-12-16 02:07:18,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fecd9ac4/481ead7b3d3f48b686c8f97843457ff5 [2021-12-16 02:07:18,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:07:18,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:07:18,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:07:18,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:07:18,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:07:18,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:18" (1/1) ... [2021-12-16 02:07:18,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3565cf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:18, skipping insertion in model container [2021-12-16 02:07:18,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:18" (1/1) ... [2021-12-16 02:07:18,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:07:18,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:07:19,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i[1226,1239] [2021-12-16 02:07:19,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i[2820,2833] [2021-12-16 02:07:19,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:07:19,157 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:07:19,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i[1226,1239] [2021-12-16 02:07:19,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i[2820,2833] [2021-12-16 02:07:19,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:07:19,182 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:07:19,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19 WrapperNode [2021-12-16 02:07:19,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:07:19,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:07:19,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:07:19,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:07:19,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,220 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-16 02:07:19,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:07:19,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:07:19,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:07:19,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:07:19,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:07:19,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:07:19,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:07:19,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:07:19,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (1/1) ... [2021-12-16 02:07:19,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:07:19,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:07:19,287 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) [2021-12-16 02:07:19,305 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 [2021-12-16 02:07:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:07:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:07:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:07:19,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:07:19,366 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:07:19,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:07:19,450 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:07:19,453 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:07:19,453 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 02:07:19,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:19 BoogieIcfgContainer [2021-12-16 02:07:19,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:07:19,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:07:19,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:07:19,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:07:19,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:07:18" (1/3) ... [2021-12-16 02:07:19,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c02570a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:19, skipping insertion in model container [2021-12-16 02:07:19,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:19" (2/3) ... [2021-12-16 02:07:19,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c02570a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:19, skipping insertion in model container [2021-12-16 02:07:19,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:19" (3/3) ... [2021-12-16 02:07:19,460 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_5.i [2021-12-16 02:07:19,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:07:19,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:07:19,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:07:19,508 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 [2021-12-16 02:07:19,508 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:07:19,516 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) [2021-12-16 02:07:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 02:07:19,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:07:19,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:07:19,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:07:19,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:07:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-16 02:07:19,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:07:19,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133067221] [2021-12-16 02:07:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:07:19,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:07:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:07:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:07:19,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:07:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133067221] [2021-12-16 02:07:19,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133067221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:07:19,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:07:19,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:07:19,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479597410] [2021-12-16 02:07:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:07:19,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:07:19,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:07:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:07:19,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:07:19,688 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) [2021-12-16 02:07:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:07:19,701 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-16 02:07:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:07:19,703 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 [2021-12-16 02:07:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:07:19,707 INFO L225 Difference]: With dead ends: 47 [2021-12-16 02:07:19,707 INFO L226 Difference]: Without dead ends: 19 [2021-12-16 02:07:19,710 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 [2021-12-16 02:07:19,713 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 [2021-12-16 02:07:19,714 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] [2021-12-16 02:07:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-16 02:07:19,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-16 02:07:19,737 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) [2021-12-16 02:07:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-16 02:07:19,739 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-16 02:07:19,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:07:19,739 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-16 02:07:19,739 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) [2021-12-16 02:07:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-16 02:07:19,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 02:07:19,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:07:19,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:07:19,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:07:19,741 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:07:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:07:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-16 02:07:19,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:07:19,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518099614] [2021-12-16 02:07:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:07:19,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:07:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:07:19,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 02:07:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:07:19,794 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 02:07:19,794 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 02:07:19,795 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-16 02:07:19,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-16 02:07:19,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:07:19,805 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 02:07:19,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:07:19,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:07:19 BoogieIcfgContainer [2021-12-16 02:07:19,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:07:19,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:07:19,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:07:19,833 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:07:19,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:19" (3/4) ... [2021-12-16 02:07:19,837 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 02:07:19,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:07:19,839 INFO L158 Benchmark]: Toolchain (without parser) took 890.95ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 53.6MB in the beginning and 63.3MB in the end (delta: -9.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-12-16 02:07:19,839 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 41.0MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:07:19,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.12ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 53.4MB in the beginning and 75.5MB in the end (delta: -22.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 02:07:19,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.31ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 73.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:07:19,843 INFO L158 Benchmark]: Boogie Preprocessor took 29.31ms. Allocated memory is still 100.7MB. Free memory was 73.6MB in the beginning and 72.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:07:19,843 INFO L158 Benchmark]: RCFGBuilder took 203.30ms. Allocated memory is still 100.7MB. Free memory was 72.5MB in the beginning and 62.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 02:07:19,844 INFO L158 Benchmark]: TraceAbstraction took 376.54ms. Allocated memory is still 100.7MB. Free memory was 61.4MB in the beginning and 64.0MB in the end (delta: -2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:07:19,844 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 100.7MB. Free memory was 64.0MB in the beginning and 63.3MB in the end (delta: 645.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:07:19,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 41.0MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.12ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 53.4MB in the beginning and 75.5MB in the end (delta: -22.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.31ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 73.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.31ms. Allocated memory is still 100.7MB. Free memory was 73.6MB in the beginning and 72.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 203.30ms. Allocated memory is still 100.7MB. Free memory was 72.5MB in the beginning and 62.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 376.54ms. Allocated memory is still 100.7MB. Free memory was 61.4MB in the beginning and 64.0MB in the end (delta: -2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 100.7MB. Free memory was 64.0MB in the beginning and 63.3MB in the end (delta: 645.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.0f && 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: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-16 02:07:19,880 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_2+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 b3e6d6197033d1263350baa937a3f4840980ed64c6f14711d69f2cfe01c9814f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:07:21,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:07:21,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:07:21,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:07:21,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:07:21,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:07:21,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:07:21,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:07:21,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:07:21,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:07:21,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:07:21,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:07:21,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:07:21,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:07:21,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:07:21,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:07:21,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:07:21,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:07:21,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:07:21,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:07:21,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:07:21,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:07:21,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:07:21,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:07:21,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:07:21,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:07:21,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:07:21,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:07:21,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:07:21,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:07:21,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:07:21,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:07:21,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:07:21,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:07:21,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:07:21,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:07:21,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:07:21,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:07:21,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:07:21,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:07:21,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:07:21,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-16 02:07:21,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:07:21,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:07:21,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:07:21,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:07:21,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:07:21,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:07:21,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:07:21,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:07:21,832 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:07:21,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:07:21,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:07:21,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:07:21,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:07:21,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:07:21,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:07:21,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:07:21,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 02:07:21,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 02:07:21,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 02:07:21,834 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:07:21,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:07:21,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:07:21,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:07:21,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:07:21,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:07:21,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:07:21,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:07:21,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:07:21,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:07:21,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:07:21,836 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 02:07:21,836 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 02:07:21,836 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:07:21,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:07:21,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:07:21,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:07:21,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 02:07:21,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e6d6197033d1263350baa937a3f4840980ed64c6f14711d69f2cfe01c9814f [2021-12-16 02:07:22,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:07:22,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:07:22,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:07:22,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:07:22,206 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:07:22,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_5.i [2021-12-16 02:07:22,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b474e4534/66438b5783e24caa927fc4dee1c06cef/FLAG41cd658b1 [2021-12-16 02:07:22,608 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:07:22,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i [2021-12-16 02:07:22,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b474e4534/66438b5783e24caa927fc4dee1c06cef/FLAG41cd658b1 [2021-12-16 02:07:22,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b474e4534/66438b5783e24caa927fc4dee1c06cef [2021-12-16 02:07:22,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:07:22,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:07:22,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:07:22,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:07:22,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:07:22,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcb01ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22, skipping insertion in model container [2021-12-16 02:07:22,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:07:22,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:07:22,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i[1226,1239] [2021-12-16 02:07:22,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i[2820,2833] [2021-12-16 02:07:22,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:07:22,854 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:07:22,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i[1226,1239] [2021-12-16 02:07:22,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_5.i[2820,2833] [2021-12-16 02:07:22,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:07:22,902 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:07:22,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22 WrapperNode [2021-12-16 02:07:22,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:07:22,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:07:22,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:07:22,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:07:22,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,951 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-16 02:07:22,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:07:22,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:07:22,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:07:22,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:07:22,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:22,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:07:22,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:07:22,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:07:22,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:07:22,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (1/1) ... [2021-12-16 02:07:23,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:07:23,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:07:23,015 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) [2021-12-16 02:07:23,038 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 [2021-12-16 02:07:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:07:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 02:07:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:07:23,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:07:23,096 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:07:23,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:07:28,117 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:07:28,122 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:07:28,123 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 02:07:28,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:28 BoogieIcfgContainer [2021-12-16 02:07:28,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:07:28,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:07:28,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:07:28,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:07:28,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:07:22" (1/3) ... [2021-12-16 02:07:28,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2dc45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:28, skipping insertion in model container [2021-12-16 02:07:28,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:07:22" (2/3) ... [2021-12-16 02:07:28,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2dc45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:07:28, skipping insertion in model container [2021-12-16 02:07:28,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:28" (3/3) ... [2021-12-16 02:07:28,135 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_5.i [2021-12-16 02:07:28,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:07:28,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:07:28,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:07:28,210 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 [2021-12-16 02:07:28,210 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:07:28,230 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) [2021-12-16 02:07:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 02:07:28,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:07:28,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:07:28,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:07:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:07:28,242 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-16 02:07:28,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:07:28,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811771739] [2021-12-16 02:07:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:07:28,255 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:07:28,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:07:28,282 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) [2021-12-16 02:07:28,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 02:07:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:07:29,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 02:07:29,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:07:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:07:29,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:07:29,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 02:07:29,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811771739] [2021-12-16 02:07:29,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811771739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:07:29,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:07:29,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:07:29,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261143325] [2021-12-16 02:07:29,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:07:29,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:07:29,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 02:07:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:07:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:07:29,612 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) [2021-12-16 02:07:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:07:29,630 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-16 02:07:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:07:29,632 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 [2021-12-16 02:07:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:07:29,640 INFO L225 Difference]: With dead ends: 47 [2021-12-16 02:07:29,640 INFO L226 Difference]: Without dead ends: 19 [2021-12-16 02:07:29,643 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 [2021-12-16 02:07:29,647 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 [2021-12-16 02:07:29,649 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] [2021-12-16 02:07:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-16 02:07:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-16 02:07:29,677 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) [2021-12-16 02:07:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-16 02:07:29,679 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-16 02:07:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:07:29,680 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-16 02:07:29,681 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) [2021-12-16 02:07:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-16 02:07:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 02:07:29,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:07:29,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:07:29,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 02:07:29,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 02:07:29,904 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:07:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:07:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-16 02:07:29,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:07:29,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932033820] [2021-12-16 02:07:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:07:29,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:07:29,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:07:29,909 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) [2021-12-16 02:07:29,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 02:07:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:07:35,312 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 02:08:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:08:27,363 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-16 02:08:27,363 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 02:08:27,364 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-16 02:08:27,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-16 02:08:27,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 02:08:27,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 02:08:27,569 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 02:08:27,572 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:08:27,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:08:27 BoogieIcfgContainer [2021-12-16 02:08:27,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:08:27,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:08:27,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:08:27,599 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:08:27,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:07:28" (3/4) ... [2021-12-16 02:08:27,601 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-16 02:08:27,625 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 02:08:27,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:08:27,629 INFO L158 Benchmark]: Toolchain (without parser) took 64990.24ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 45.8MB in the beginning and 46.3MB in the end (delta: -464.9kB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2021-12-16 02:08:27,629 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.2MB in the beginning and 47.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:08:27,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.67ms. Allocated memory is still 65.0MB. Free memory was 45.6MB in the beginning and 46.2MB in the end (delta: -630.4kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 02:08:27,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.29ms. Allocated memory is still 65.0MB. Free memory was 46.2MB in the beginning and 44.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:08:27,630 INFO L158 Benchmark]: Boogie Preprocessor took 40.53ms. Allocated memory is still 65.0MB. Free memory was 44.4MB in the beginning and 43.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:08:27,630 INFO L158 Benchmark]: RCFGBuilder took 5131.15ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 32.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 02:08:27,631 INFO L158 Benchmark]: TraceAbstraction took 59470.91ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 32.2MB in the beginning and 48.4MB in the end (delta: -16.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-12-16 02:08:27,631 INFO L158 Benchmark]: Witness Printer took 29.43ms. Allocated memory is still 88.1MB. Free memory was 48.0MB in the beginning and 46.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:08:27,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.2MB in the beginning and 47.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.67ms. Allocated memory is still 65.0MB. Free memory was 45.6MB in the beginning and 46.2MB in the end (delta: -630.4kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.29ms. Allocated memory is still 65.0MB. Free memory was 46.2MB in the beginning and 44.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.53ms. Allocated memory is still 65.0MB. Free memory was 44.4MB in the beginning and 43.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5131.15ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 32.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 59470.91ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 32.2MB in the beginning and 48.4MB in the end (delta: -16.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Witness Printer took 29.43ms. Allocated memory is still 88.1MB. Free memory was 48.0MB in the beginning and 46.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.0f && 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)=-0.9060007929801941, \result=-0.7872406840324402, x=-0.9060007929801941] [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)=-0.9060007929801941, \result=0.6184232831001282, x=-0.9060007929801941] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.9060007929801941, x=0.36697953939437866] [L102] reach_error() VAL [IN=-0.9060007929801941, x=0.36697953939437866] - 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: 59.4s, 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, 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, 6.4s 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! [2021-12-16 02:08:27,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE