./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_Newton-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/float-benchs/inv_Newton-2.c -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 67155ca1e686450fca2a6f4b9f638c838555b88a3546adff9656d040c859ca12 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:15:45,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:15:45,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:15:45,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:15:45,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:15:45,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:15:45,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:15:45,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:15:45,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:15:45,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:15:45,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:15:45,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:15:45,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:15:45,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:15:45,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:15:45,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:15:45,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:15:45,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:15:45,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:15:45,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:15:45,220 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:15:45,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:15:45,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:15:45,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:15:45,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:15:45,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:15:45,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:15:45,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:15:45,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:15:45,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:15:45,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:15:45,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:15:45,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:15:45,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:15:45,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:15:45,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:15:45,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:15:45,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:15:45,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:15:45,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:15:45,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:15:45,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:15:45,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:15:45,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:15:45,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:15:45,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:15:45,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:15:45,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:15:45,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:15:45,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:15:45,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:15:45,261 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:15:45,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:15:45,261 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:15:45,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:15:45,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:15:45,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:15:45,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:15:45,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:15:45,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:15:45,263 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:15:45,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:15:45,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:15:45,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:15:45,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:15:45,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:15:45,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:15:45,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:15:45,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:15:45,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:15:45,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:15:45,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:15:45,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:15:45,265 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:15:45,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:15:45,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:15:45,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67155ca1e686450fca2a6f4b9f638c838555b88a3546adff9656d040c859ca12 [2022-07-13 14:15:45,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:15:45,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:15:45,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:15:45,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:15:45,472 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:15:45,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton-2.c [2022-07-13 14:15:45,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935543a2e/fd414c41ffa1467687533de13a3c2e9b/FLAGdafad6c76 [2022-07-13 14:15:45,831 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:15:45,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton-2.c [2022-07-13 14:15:45,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935543a2e/fd414c41ffa1467687533de13a3c2e9b/FLAGdafad6c76 [2022-07-13 14:15:46,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935543a2e/fd414c41ffa1467687533de13a3c2e9b [2022-07-13 14:15:46,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:15:46,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:15:46,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:15:46,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:15:46,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:15:46,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec968b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46, skipping insertion in model container [2022-07-13 14:15:46,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:15:46,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:15:46,420 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/float-benchs/inv_Newton-2.c[847,860] [2022-07-13 14:15:46,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:15:46,450 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:15:46,461 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/float-benchs/inv_Newton-2.c[847,860] [2022-07-13 14:15:46,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:15:46,483 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:15:46,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46 WrapperNode [2022-07-13 14:15:46,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:15:46,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:15:46,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:15:46,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:15:46,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,522 INFO L137 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2022-07-13 14:15:46,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:15:46,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:15:46,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:15:46,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:15:46,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:15:46,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:15:46,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:15:46,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:15:46,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (1/1) ... [2022-07-13 14:15:46,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:15:46,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:15:46,595 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) [2022-07-13 14:15:46,617 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 [2022-07-13 14:15:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:15:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:15:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 14:15:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-13 14:15:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 14:15:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-13 14:15:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:15:46,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:15:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 14:15:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 14:15:46,684 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:15:46,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:15:46,784 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:15:46,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:15:46,789 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:15:46,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:15:46 BoogieIcfgContainer [2022-07-13 14:15:46,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:15:46,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:15:46,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:15:46,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:15:46,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:15:46" (1/3) ... [2022-07-13 14:15:46,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7db7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:15:46, skipping insertion in model container [2022-07-13 14:15:46,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:46" (2/3) ... [2022-07-13 14:15:46,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7db7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:15:46, skipping insertion in model container [2022-07-13 14:15:46,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:15:46" (3/3) ... [2022-07-13 14:15:46,809 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-2.c [2022-07-13 14:15:46,819 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:15:46,819 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:15:46,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:15:46,867 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@41d9d1f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@fa2c660 [2022-07-13 14:15:46,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:15:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-07-13 14:15:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:15:46,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:15:46,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:15:46,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:15:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:15:46,883 INFO L85 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2022-07-13 14:15:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:15:46,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852382738] [2022-07-13 14:15:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:15:46,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:15:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:15:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:15:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:15:46,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852382738] [2022-07-13 14:15:46,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852382738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:15:46,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:15:46,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:15:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103192421] [2022-07-13 14:15:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:15:46,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:15:46,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:15:47,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:15:47,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:15:47,011 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-07-13 14:15:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:15:47,020 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-07-13 14:15:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:15:47,022 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 [2022-07-13 14:15:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:15:47,026 INFO L225 Difference]: With dead ends: 25 [2022-07-13 14:15:47,026 INFO L226 Difference]: Without dead ends: 10 [2022-07-13 14:15:47,028 INFO L412 NwaCegarLoop]: 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 [2022-07-13 14:15:47,030 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2022-07-13 14:15:47,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:15:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-13 14:15:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-13 14:15:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-13 14:15:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-13 14:15:47,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2022-07-13 14:15:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:15:47,069 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-13 14:15:47,069 INFO L496 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) [2022-07-13 14:15:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-13 14:15:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:15:47,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:15:47,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:15:47,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:15:47,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:15:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:15:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2022-07-13 14:15:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:15:47,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9147229] [2022-07-13 14:15:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:15:47,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:15:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:15:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:15:47,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:15:47,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9147229] [2022-07-13 14:15:47,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9147229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:15:47,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:15:47,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:15:47,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651732912] [2022-07-13 14:15:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:15:47,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 14:15:47,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:15:47,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 14:15:47,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:15:47,179 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 14:15:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:15:47,188 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-07-13 14:15:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 14:15:47,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-07-13 14:15:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:15:47,189 INFO L225 Difference]: With dead ends: 16 [2022-07-13 14:15:47,189 INFO L226 Difference]: Without dead ends: 11 [2022-07-13 14:15:47,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:15:47,191 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:15:47,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:15:47,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-13 14:15:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-13 14:15:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-07-13 14:15:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-07-13 14:15:47,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-07-13 14:15:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:15:47,196 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-07-13 14:15:47,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 14:15:47,196 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-07-13 14:15:47,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 14:15:47,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:15:47,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:15:47,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 14:15:47,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:15:47,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:15:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2022-07-13 14:15:47,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:15:47,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178171270] [2022-07-13 14:15:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:15:47,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:15:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:15:47,251 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:15:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:15:47,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:15:47,293 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:15:47,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:15:47,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 14:15:47,298 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 14:15:47,300 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:15:47,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:15:47 BoogieIcfgContainer [2022-07-13 14:15:47,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:15:47,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:15:47,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:15:47,319 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:15:47,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:15:46" (3/4) ... [2022-07-13 14:15:47,322 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:15:47,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:15:47,323 INFO L158 Benchmark]: Toolchain (without parser) took 1053.29ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 48.2MB in the beginning and 75.9MB in the end (delta: -27.7MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2022-07-13 14:15:47,324 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 54.4MB in the beginning and 54.3MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:15:47,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.25ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 48.0MB in the beginning and 90.0MB in the end (delta: -42.0MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-07-13 14:15:47,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.55ms. Allocated memory is still 113.2MB. Free memory was 90.0MB in the beginning and 88.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:15:47,330 INFO L158 Benchmark]: Boogie Preprocessor took 35.26ms. Allocated memory is still 113.2MB. Free memory was 88.2MB in the beginning and 86.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:15:47,330 INFO L158 Benchmark]: RCFGBuilder took 231.63ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 75.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 14:15:47,331 INFO L158 Benchmark]: TraceAbstraction took 525.95ms. Allocated memory is still 113.2MB. Free memory was 75.3MB in the beginning and 76.5MB in the end (delta: -1.2MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2022-07-13 14:15:47,332 INFO L158 Benchmark]: Witness Printer took 3.48ms. Allocated memory is still 113.2MB. Free memory was 76.5MB in the beginning and 75.9MB in the end (delta: 553.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:15:47,335 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 81.8MB. Free memory was 54.4MB in the beginning and 54.3MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.25ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 48.0MB in the beginning and 90.0MB in the end (delta: -42.0MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.55ms. Allocated memory is still 113.2MB. Free memory was 90.0MB in the beginning and 88.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.26ms. Allocated memory is still 113.2MB. Free memory was 88.2MB in the beginning and 86.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.63ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 75.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 525.95ms. Allocated memory is still 113.2MB. Free memory was 75.3MB in the beginning and 76.5MB in the end (delta: -1.2MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * Witness Printer took 3.48ms. Allocated memory is still 113.2MB. Free memory was 76.5MB in the beginning and 75.9MB in the end (delta: 553.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 23]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43, overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of to_real at line 38. Possible FailurePath: [L53] double a,r; [L55] a = __VERIFIER_nondet_double() [L56] CALL assume_abort_if_not(a >= 20. && a <= 30.) [L21] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L56] RET assume_abort_if_not(a >= 20. && a <= 30.) [L58] CALL, EXPR inv(a) [L33] double xi, xsi, temp; [L34] signed int cond, exp; [L35] union double_int A_u, xi_u; [L36] A_u.d = A [L37] EXPR A_u.i [L37] exp = (signed int) ((A_u.i & 0x7FF00000) >> 20) - 1023 [L38] xi_u.d = 1 [L39] xi_u.i = ((1023-exp) << 20) [L40] EXPR xi_u.d [L40] xi = xi_u.d [L41] cond = 1 VAL [\old(A)=2145386501, A=2145386501, A_u={4:0}, cond=1, exp=-1023, xi=2145386500, xi_u={5:0}] [L42] COND TRUE \read(cond) [L43] xsi = 2*xi-A*xi*xi [L44] temp = xsi-xi [L45] cond = ((temp > 1e-10) || (temp < -1e-10)) [L46] xi = xsi VAL [\old(A)=2145386501, A=2145386501, A_u={4:0}, cond=0, exp=-1023, xi=2145386497, xi_u={5:0}, xsi=2145386497] [L42] COND FALSE !(\read(cond)) VAL [\old(A)=2145386501, A=2145386501, A_u={4:0}, cond=0, exp=-1023, xi=2145386497, xi_u={5:0}, xsi=2145386497] [L48] return xi; [L48] return xi; [L48] return xi; VAL [\old(A)=2145386501, \result=2145386497, A=2145386501, cond=0, exp=-1023, xi=2145386497, xsi=2145386497] [L58] RET, EXPR inv(a) [L58] r = inv(a) [L60] CALL __VERIFIER_assert(r >= 0 && r <= 0.06) [L23] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L23] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2022-07-13 14:15:47,366 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/float-benchs/inv_Newton-2.c -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 67155ca1e686450fca2a6f4b9f638c838555b88a3546adff9656d040c859ca12 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:15:49,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:15:49,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:15:49,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:15:49,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:15:49,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:15:49,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:15:49,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:15:49,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:15:49,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:15:49,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:15:49,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:15:49,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:15:49,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:15:49,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:15:49,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:15:49,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:15:49,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:15:49,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:15:49,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:15:49,117 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:15:49,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:15:49,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:15:49,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:15:49,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:15:49,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:15:49,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:15:49,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:15:49,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:15:49,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:15:49,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:15:49,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:15:49,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:15:49,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:15:49,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:15:49,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:15:49,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:15:49,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:15:49,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:15:49,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:15:49,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:15:49,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:15:49,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:15:49,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:15:49,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:15:49,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:15:49,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:15:49,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:15:49,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:15:49,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:15:49,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:15:49,165 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:15:49,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:15:49,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:15:49,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:15:49,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:15:49,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:15:49,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:15:49,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:15:49,167 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:15:49,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:15:49,167 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:15:49,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:15:49,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:15:49,168 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:15:49,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:15:49,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:15:49,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:15:49,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:15:49,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:15:49,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:15:49,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:15:49,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:15:49,169 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:15:49,169 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:15:49,170 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:15:49,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:15:49,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:15:49,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:15:49,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67155ca1e686450fca2a6f4b9f638c838555b88a3546adff9656d040c859ca12 [2022-07-13 14:15:49,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:15:49,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:15:49,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:15:49,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:15:49,474 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:15:49,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_Newton-2.c [2022-07-13 14:15:49,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd4adbbf/b18d81f3882149f5b02f193fbf2f5671/FLAG246d81b8f [2022-07-13 14:15:49,896 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:15:49,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_Newton-2.c [2022-07-13 14:15:49,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd4adbbf/b18d81f3882149f5b02f193fbf2f5671/FLAG246d81b8f [2022-07-13 14:15:49,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd4adbbf/b18d81f3882149f5b02f193fbf2f5671 [2022-07-13 14:15:49,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:15:49,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:15:49,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:15:49,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:15:49,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:15:49,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:15:49" (1/1) ... [2022-07-13 14:15:49,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d46be70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:49, skipping insertion in model container [2022-07-13 14:15:49,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:15:49" (1/1) ... [2022-07-13 14:15:49,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:15:49,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:15:50,042 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/float-benchs/inv_Newton-2.c[847,860] [2022-07-13 14:15:50,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:15:50,077 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:15:50,107 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/float-benchs/inv_Newton-2.c[847,860] [2022-07-13 14:15:50,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:15:50,146 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:15:50,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50 WrapperNode [2022-07-13 14:15:50,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:15:50,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:15:50,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:15:50,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:15:50,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,186 INFO L137 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2022-07-13 14:15:50,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:15:50,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:15:50,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:15:50,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:15:50,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:15:50,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:15:50,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:15:50,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:15:50,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (1/1) ... [2022-07-13 14:15:50,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:15:50,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:15:50,257 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) [2022-07-13 14:15:50,279 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 [2022-07-13 14:15:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:15:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-07-13 14:15:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-13 14:15:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:15:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 14:15:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 14:15:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:15:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:15:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 14:15:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 14:15:50,365 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:15:50,366 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:15:52,694 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:15:52,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:15:52,698 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:15:52,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:15:52 BoogieIcfgContainer [2022-07-13 14:15:52,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:15:52,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:15:52,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:15:52,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:15:52,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:15:49" (1/3) ... [2022-07-13 14:15:52,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390e014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:15:52, skipping insertion in model container [2022-07-13 14:15:52,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:15:50" (2/3) ... [2022-07-13 14:15:52,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390e014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:15:52, skipping insertion in model container [2022-07-13 14:15:52,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:15:52" (3/3) ... [2022-07-13 14:15:52,705 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-2.c [2022-07-13 14:15:52,714 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:15:52,715 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:15:52,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:15:52,758 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4dfbf5fe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@34772b75 [2022-07-13 14:15:52,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:15:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-07-13 14:15:52,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:15:52,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:15:52,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:15:52,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:15:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:15:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2022-07-13 14:15:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:15:52,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308482933] [2022-07-13 14:15:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:15:52,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:15:52,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:15:52,801 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) [2022-07-13 14:15:52,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 14:15:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:15:52,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 14:15:52,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:15:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:15:52,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:15:52,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:15:52,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308482933] [2022-07-13 14:15:52,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308482933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:15:52,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:15:52,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:15:52,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901073061] [2022-07-13 14:15:52,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:15:52,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:15:52,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:15:52,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:15:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:15:52,964 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-07-13 14:15:52,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:15:52,974 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-07-13 14:15:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:15:52,976 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 [2022-07-13 14:15:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:15:52,981 INFO L225 Difference]: With dead ends: 25 [2022-07-13 14:15:52,981 INFO L226 Difference]: Without dead ends: 10 [2022-07-13 14:15:52,984 INFO L412 NwaCegarLoop]: 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 [2022-07-13 14:15:52,987 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2022-07-13 14:15:52,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:15:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-13 14:15:53,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-13 14:15:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-13 14:15:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-13 14:15:53,027 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2022-07-13 14:15:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:15:53,028 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-13 14:15:53,028 INFO L496 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) [2022-07-13 14:15:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-13 14:15:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:15:53,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:15:53,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:15:53,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 14:15:53,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:15:53,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:15:53,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:15:53,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2022-07-13 14:15:53,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:15:53,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340995017] [2022-07-13 14:15:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:15:53,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:15:53,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:15:53,242 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) [2022-07-13 14:15:53,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 14:15:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:15:53,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 14:15:53,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:15:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:15:53,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:15:53,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:15:53,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340995017] [2022-07-13 14:15:53,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340995017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:15:53,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:15:53,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 14:15:53,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777300330] [2022-07-13 14:15:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:15:53,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 14:15:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:15:53,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 14:15:53,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:15:53,360 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 14:15:55,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:15:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:15:55,699 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-07-13 14:15:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 14:15:55,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-07-13 14:15:55,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:15:55,700 INFO L225 Difference]: With dead ends: 16 [2022-07-13 14:15:55,700 INFO L226 Difference]: Without dead ends: 11 [2022-07-13 14:15:55,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 14:15:55,701 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 14:15:55,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 14:15:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-13 14:15:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-13 14:15:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-07-13 14:15:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-07-13 14:15:55,703 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-07-13 14:15:55,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:15:55,704 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-07-13 14:15:55,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-13 14:15:55,704 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-07-13 14:15:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 14:15:55,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:15:55,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:15:55,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 14:15:55,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:15:55,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:15:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:15:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2022-07-13 14:15:55,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:15:55,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352721279] [2022-07-13 14:15:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:15:55,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:15:55,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:15:55,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:15:55,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 14:15:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:15:56,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 14:15:56,757 INFO L286 TraceCheckSpWp]: Computing forward predicates...