./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_3+newton_1_3.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 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:27:47,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:27:47,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:27:47,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:27:47,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:27:47,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:27:47,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:27:47,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:27:47,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:27:47,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:27:47,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:27:47,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:27:47,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:27:47,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:27:47,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:27:47,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:27:47,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:27:47,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:27:47,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:27:47,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:27:47,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:27:47,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:27:47,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:27:47,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:27:47,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:27:47,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:27:47,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:27:47,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:27:47,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:27:47,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:27:47,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:27:47,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:27:47,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:27:47,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:27:47,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:27:47,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:27:47,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:27:47,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:27:47,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:27:47,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:27:47,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:27:47,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:27:47,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:27:47,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:27:47,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:27:47,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:27:47,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:27:47,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:27:47,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:27:47,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:27:47,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:27:47,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:27:47,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:27:47,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:27:47,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:27:47,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:27:47,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:27:47,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:27:47,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:27:47,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:27:47,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:27:47,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:27:47,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:27:47,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:27:47,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:27:47,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:27:47,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:27:47,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:27:47,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a [2021-12-21 14:27:47,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:27:47,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:27:47,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:27:47,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:27:47,472 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:27:47,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2021-12-21 14:27:47,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229d025f2/8d56db63c32a437fbd692ea25e4879f6/FLAGe9011eb22 [2021-12-21 14:27:47,823 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:27:47,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2021-12-21 14:27:47,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229d025f2/8d56db63c32a437fbd692ea25e4879f6/FLAGe9011eb22 [2021-12-21 14:27:48,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229d025f2/8d56db63c32a437fbd692ea25e4879f6 [2021-12-21 14:27:48,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:27:48,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:27:48,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:27:48,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:27:48,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:27:48,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227135f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48, skipping insertion in model container [2021-12-21 14:27:48,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:27:48,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:27:48,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[1226,1239] [2021-12-21 14:27:48,417 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2021-12-21 14:27:48,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:27:48,423 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:27:48,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[1226,1239] [2021-12-21 14:27:48,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2021-12-21 14:27:48,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:27:48,449 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:27:48,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48 WrapperNode [2021-12-21 14:27:48,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:27:48,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:27:48,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:27:48,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:27:48,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,475 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-12-21 14:27:48,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:27:48,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:27:48,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:27:48,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:27:48,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:27:48,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:27:48,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:27:48,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:27:48,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (1/1) ... [2021-12-21 14:27:48,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:27:48,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:27:48,521 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) [2021-12-21 14:27:48,522 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 [2021-12-21 14:27:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:27:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:27:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:27:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:27:48,596 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:27:48,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:27:48,696 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:27:48,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:27:48,701 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 14:27:48,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:27:48 BoogieIcfgContainer [2021-12-21 14:27:48,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:27:48,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:27:48,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:27:48,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:27:48,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:27:48" (1/3) ... [2021-12-21 14:27:48,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671a265b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:27:48, skipping insertion in model container [2021-12-21 14:27:48,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:48" (2/3) ... [2021-12-21 14:27:48,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671a265b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:27:48, skipping insertion in model container [2021-12-21 14:27:48,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:27:48" (3/3) ... [2021-12-21 14:27:48,712 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_3.i [2021-12-21 14:27:48,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:27:48,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:27:48,774 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:27:48,778 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 [2021-12-21 14:27:48,778 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:27:48,788 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) [2021-12-21 14:27:48,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:27:48,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:27:48,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:27:48,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:27:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:27:48,796 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-21 14:27:48,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:27:48,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433774879] [2021-12-21 14:27:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:27:48,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:27:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:27:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:27:48,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:27:48,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433774879] [2021-12-21 14:27:48,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433774879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:27:48,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:27:48,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:27:48,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563225124] [2021-12-21 14:27:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:27:48,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 14:27:48,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:27:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 14:27:48,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 14:27:48,962 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) [2021-12-21 14:27:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:27:48,980 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-21 14:27:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 14:27:48,982 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 [2021-12-21 14:27:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:27:48,988 INFO L225 Difference]: With dead ends: 47 [2021-12-21 14:27:48,988 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 14:27:48,990 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 [2021-12-21 14:27:48,993 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 [2021-12-21 14:27:48,995 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] [2021-12-21 14:27:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 14:27:49,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 14:27:49,023 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) [2021-12-21 14:27:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-21 14:27:49,025 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-21 14:27:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:27:49,025 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-21 14:27:49,026 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) [2021-12-21 14:27:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-21 14:27:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:27:49,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:27:49,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:27:49,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:27:49,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:27:49,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:27:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-21 14:27:49,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:27:49,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981718606] [2021-12-21 14:27:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:27:49,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:27:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 14:27:49,063 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 14:27:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 14:27:49,096 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 14:27:49,096 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 14:27:49,097 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-21 14:27:49,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-21 14:27:49,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:27:49,112 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 14:27:49,114 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 14:27:49,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:27:49 BoogieIcfgContainer [2021-12-21 14:27:49,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 14:27:49,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 14:27:49,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 14:27:49,138 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 14:27:49,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:27:48" (3/4) ... [2021-12-21 14:27:49,141 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 14:27:49,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 14:27:49,142 INFO L158 Benchmark]: Toolchain (without parser) took 881.53ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 58.9MB in the beginning and 45.6MB in the end (delta: 13.3MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2021-12-21 14:27:49,143 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 88.1MB. Free memory was 45.1MB in the beginning and 45.1MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:27:49,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.80ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 58.6MB in the beginning and 83.3MB in the end (delta: -24.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 14:27:49,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.26ms. Allocated memory is still 107.0MB. Free memory was 83.3MB in the beginning and 81.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 14:27:49,147 INFO L158 Benchmark]: Boogie Preprocessor took 19.94ms. Allocated memory is still 107.0MB. Free memory was 81.8MB in the beginning and 80.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:27:49,147 INFO L158 Benchmark]: RCFGBuilder took 205.69ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 69.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 14:27:49,148 INFO L158 Benchmark]: TraceAbstraction took 434.05ms. Allocated memory is still 107.0MB. Free memory was 69.2MB in the beginning and 46.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-21 14:27:49,148 INFO L158 Benchmark]: Witness Printer took 3.00ms. Allocated memory is still 107.0MB. Free memory was 46.2MB in the beginning and 45.6MB in the end (delta: 586.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 14:27:49,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 88.1MB. Free memory was 45.1MB in the beginning and 45.1MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.80ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 58.6MB in the beginning and 83.3MB in the end (delta: -24.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.26ms. Allocated memory is still 107.0MB. Free memory was 83.3MB in the beginning and 81.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.94ms. Allocated memory is still 107.0MB. Free memory was 81.8MB in the beginning and 80.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 205.69ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 69.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 434.05ms. Allocated memory is still 107.0MB. Free memory was 69.2MB in the beginning and 46.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.00ms. Allocated memory is still 107.0MB. Free memory was 46.2MB in the beginning and 45.6MB in the end (delta: 586.9kB). 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 > -0.6f && IN < 0.6f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 14:27:49,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_3+newton_1_3.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 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:27:50,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:27:50,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:27:50,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:27:50,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:27:50,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:27:50,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:27:50,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:27:50,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:27:50,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:27:50,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:27:50,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:27:50,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:27:50,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:27:50,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:27:50,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:27:50,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:27:50,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:27:50,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:27:50,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:27:50,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:27:50,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:27:50,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:27:50,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:27:50,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:27:50,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:27:50,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:27:50,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:27:50,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:27:50,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:27:50,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:27:50,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:27:50,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:27:50,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:27:50,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:27:50,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:27:50,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:27:50,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:27:50,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:27:50,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:27:50,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:27:50,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 14:27:50,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:27:50,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:27:50,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:27:50,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:27:50,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:27:50,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:27:50,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:27:50,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:27:50,861 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:27:50,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:27:50,862 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:27:50,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:27:50,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:27:50,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:27:50,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:27:50,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:27:50,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 14:27:50,863 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 14:27:50,864 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 14:27:50,864 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:27:50,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:27:50,864 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:27:50,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:27:50,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:27:50,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:27:50,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:27:50,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:27:50,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:27:50,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:27:50,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:27:50,870 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 14:27:50,870 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 14:27:50,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:27:50,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:27:50,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:27:50,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:27:50,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 14:27:50,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a [2021-12-21 14:27:51,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:27:51,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:27:51,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:27:51,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:27:51,189 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:27:51,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2021-12-21 14:27:51,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ff179a8a/c05092bf1fee4ae98bd8275db037014d/FLAGabecd400d [2021-12-21 14:27:51,574 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:27:51,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2021-12-21 14:27:51,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ff179a8a/c05092bf1fee4ae98bd8275db037014d/FLAGabecd400d [2021-12-21 14:27:51,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ff179a8a/c05092bf1fee4ae98bd8275db037014d [2021-12-21 14:27:51,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:27:51,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:27:51,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:27:51,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:27:51,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:27:51,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d613732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51, skipping insertion in model container [2021-12-21 14:27:51,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:27:51,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:27:51,760 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[1226,1239] [2021-12-21 14:27:51,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2021-12-21 14:27:51,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:27:51,806 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:27:51,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[1226,1239] [2021-12-21 14:27:51,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2021-12-21 14:27:51,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:27:51,883 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:27:51,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51 WrapperNode [2021-12-21 14:27:51,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:27:51,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:27:51,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:27:51,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:27:51,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,927 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-12-21 14:27:51,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:27:51,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:27:51,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:27:51,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:27:51,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:27:51,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:27:51,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:27:51,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:27:51,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (1/1) ... [2021-12-21 14:27:51,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:27:51,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:27:51,992 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) [2021-12-21 14:27:52,000 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 [2021-12-21 14:27:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:27:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 14:27:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:27:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:27:52,088 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:27:52,089 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:27:58,085 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:27:58,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:27:58,090 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 14:27:58,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:27:58 BoogieIcfgContainer [2021-12-21 14:27:58,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:27:58,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:27:58,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:27:58,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:27:58,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:27:51" (1/3) ... [2021-12-21 14:27:58,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68659e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:27:58, skipping insertion in model container [2021-12-21 14:27:58,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:27:51" (2/3) ... [2021-12-21 14:27:58,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68659e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:27:58, skipping insertion in model container [2021-12-21 14:27:58,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:27:58" (3/3) ... [2021-12-21 14:27:58,102 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_3.i [2021-12-21 14:27:58,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:27:58,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:27:58,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:27:58,144 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 [2021-12-21 14:27:58,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:27:58,153 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) [2021-12-21 14:27:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:27:58,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:27:58,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:27:58,157 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:27:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:27:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-12-21 14:27:58,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 14:27:58,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424092160] [2021-12-21 14:27:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:27:58,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 14:27:58,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 14:27:58,170 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) [2021-12-21 14:27:58,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 14:27:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:27:59,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 14:27:59,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:27:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:27:59,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 14:27:59,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 14:27:59,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424092160] [2021-12-21 14:27:59,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424092160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:27:59,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:27:59,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:27:59,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071633430] [2021-12-21 14:27:59,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:27:59,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 14:27:59,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 14:27:59,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 14:27:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 14:27:59,156 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) [2021-12-21 14:27:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:27:59,169 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-12-21 14:27:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 14:27:59,171 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 [2021-12-21 14:27:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:27:59,176 INFO L225 Difference]: With dead ends: 47 [2021-12-21 14:27:59,177 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 14:27:59,179 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 [2021-12-21 14:27:59,182 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 [2021-12-21 14:27:59,183 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] [2021-12-21 14:27:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 14:27:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 14:27:59,208 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) [2021-12-21 14:27:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-21 14:27:59,210 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-12-21 14:27:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:27:59,210 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-21 14:27:59,212 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) [2021-12-21 14:27:59,212 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-21 14:27:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 14:27:59,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:27:59,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:27:59,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 14:27:59,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 14:27:59,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:27:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:27:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-12-21 14:27:59,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 14:27:59,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590177546] [2021-12-21 14:27:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:27:59,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 14:27:59,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 14:27:59,442 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) [2021-12-21 14:27:59,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process