./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_tight.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/zonotope_tight.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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:25:28,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:25:28,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:25:28,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:25:28,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:25:28,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:25:28,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:25:28,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:25:28,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:25:28,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:25:28,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:25:28,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:25:28,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:25:28,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:25:28,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:25:28,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:25:28,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:25:28,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:25:28,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:25:28,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:25:28,342 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:25:28,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:25:28,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:25:28,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:25:28,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:25:28,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:25:28,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:25:28,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:25:28,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:25:28,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:25:28,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:25:28,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:25:28,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:25:28,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:25:28,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:25:28,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:25:28,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:25:28,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:25:28,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:25:28,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:25:28,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:25:28,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:25:28,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:25:28,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:25:28,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:25:28,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:25:28,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:25:28,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:25:28,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:25:28,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:25:28,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:25:28,389 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:25:28,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:25:28,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:25:28,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:25:28,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:25:28,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:25:28,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:25:28,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:25:28,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:25:28,391 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:25:28,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:25:28,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:25:28,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:25:28,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:25:28,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:25:28,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:25:28,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:25:28,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:25:28,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:25:28,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:25:28,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:25:28,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:25:28,393 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:25:28,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:25:28,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:25:28,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2022-07-13 14:25:28,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:25:28,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:25:28,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:25:28,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:25:28,596 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:25:28,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-07-13 14:25:28,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd78e2a33/3e0e2b6dacee4ad9ac05ac984afaccd1/FLAGc29facac5 [2022-07-13 14:25:28,972 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:25:28,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-07-13 14:25:28,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd78e2a33/3e0e2b6dacee4ad9ac05ac984afaccd1/FLAGc29facac5 [2022-07-13 14:25:28,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd78e2a33/3e0e2b6dacee4ad9ac05ac984afaccd1 [2022-07-13 14:25:28,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:25:28,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:25:28,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:25:28,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:25:28,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:25:28,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:25:28" (1/1) ... [2022-07-13 14:25:28,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282a6804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:28, skipping insertion in model container [2022-07-13 14:25:28,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:25:28" (1/1) ... [2022-07-13 14:25:29,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:25:29,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:25:29,163 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/zonotope_tight.c[577,590] [2022-07-13 14:25:29,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:25:29,180 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:25:29,190 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/zonotope_tight.c[577,590] [2022-07-13 14:25:29,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:25:29,202 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:25:29,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29 WrapperNode [2022-07-13 14:25:29,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:25:29,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:25:29,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:25:29,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:25:29,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,226 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-07-13 14:25:29,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:25:29,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:25:29,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:25:29,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:25:29,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:25:29,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:25:29,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:25:29,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:25:29,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (1/1) ... [2022-07-13 14:25:29,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:25:29,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:25:29,291 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 14:25:29,296 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 14:25:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:25:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:25:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:25:29,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:25:29,356 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:25:29,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:25:29,413 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:25:29,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:25:29,417 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 14:25:29,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:25:29 BoogieIcfgContainer [2022-07-13 14:25:29,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:25:29,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:25:29,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:25:29,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:25:29,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:25:28" (1/3) ... [2022-07-13 14:25:29,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730e6d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:25:29, skipping insertion in model container [2022-07-13 14:25:29,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:29" (2/3) ... [2022-07-13 14:25:29,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730e6d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:25:29, skipping insertion in model container [2022-07-13 14:25:29,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:25:29" (3/3) ... [2022-07-13 14:25:29,438 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2022-07-13 14:25:29,447 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:25:29,447 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:25:29,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:25:29,509 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@3bf2793a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@157497f5 [2022-07-13 14:25:29,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:25:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 14:25:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 14:25:29,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:25:29,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:25:29,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:25:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:25:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-07-13 14:25:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:25:29,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381679422] [2022-07-13 14:25:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:25:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:25:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:25:29,641 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 14:25:29,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:25:29,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381679422] [2022-07-13 14:25:29,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381679422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:25:29,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:25:29,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:25:29,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346166052] [2022-07-13 14:25:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:25:29,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:25:29,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:25:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:25:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:25:29,675 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 14:25:29,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:25:29,684 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-13 14:25:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:25:29,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-07-13 14:25:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:25:29,690 INFO L225 Difference]: With dead ends: 23 [2022-07-13 14:25:29,690 INFO L226 Difference]: Without dead ends: 9 [2022-07-13 14:25:29,692 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 14:25:29,696 INFO L413 NwaCegarLoop]: 13 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, 13 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 14:25:29,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:25:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-13 14:25:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-13 14:25:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 14:25:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-13 14:25:29,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-07-13 14:25:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:25:29,716 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-13 14:25:29,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 14:25:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-13 14:25:29,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 14:25:29,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:25:29,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:25:29,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:25:29,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:25:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:25:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-07-13 14:25:29,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:25:29,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145674209] [2022-07-13 14:25:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:25:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:25:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:25:29,743 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:25:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:25:29,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:25:29,773 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:25:29,774 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:25:29,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 14:25:29,777 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 14:25:29,779 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:25:29,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:25:29 BoogieIcfgContainer [2022-07-13 14:25:29,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:25:29,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:25:29,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:25:29,801 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:25:29,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:25:29" (3/4) ... [2022-07-13 14:25:29,804 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:25:29,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:25:29,805 INFO L158 Benchmark]: Toolchain (without parser) took 811.65ms. Allocated memory is still 119.5MB. Free memory was 86.3MB in the beginning and 60.4MB in the end (delta: 25.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-07-13 14:25:29,806 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory was 32.5MB in the beginning and 32.4MB in the end (delta: 40.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:25:29,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.17ms. Allocated memory is still 119.5MB. Free memory was 86.1MB in the beginning and 94.8MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:25:29,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.14ms. Allocated memory is still 119.5MB. Free memory was 94.8MB in the beginning and 93.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:25:29,810 INFO L158 Benchmark]: Boogie Preprocessor took 20.74ms. Allocated memory is still 119.5MB. Free memory was 93.4MB in the beginning and 92.7MB in the end (delta: 687.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:25:29,812 INFO L158 Benchmark]: RCFGBuilder took 169.62ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 83.5MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 14:25:29,812 INFO L158 Benchmark]: TraceAbstraction took 380.49ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 60.4MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-13 14:25:29,812 INFO L158 Benchmark]: Witness Printer took 3.12ms. Allocated memory is still 119.5MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:25:29,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory was 32.5MB in the beginning and 32.4MB in the end (delta: 40.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.17ms. Allocated memory is still 119.5MB. Free memory was 86.1MB in the beginning and 94.8MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.14ms. Allocated memory is still 119.5MB. Free memory was 94.8MB in the beginning and 93.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.74ms. Allocated memory is still 119.5MB. Free memory was 93.4MB in the beginning and 92.7MB in the end (delta: 687.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 169.62ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 83.5MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 380.49ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 60.4MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.12ms. Allocated memory is still 119.5MB. Free memory is still 60.4MB. 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: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L21] CALL assume_abort_if_not(x >= 0. && x <= 10.) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x >= 0. && x <= 10.) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L27] CALL __VERIFIER_assert(y >= 0. && y <= 4.) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-13 14:25:29,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_tight.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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:25:31,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:25:31,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:25:31,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:25:31,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:25:31,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:25:31,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:25:31,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:25:31,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:25:31,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:25:31,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:25:31,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:25:31,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:25:31,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:25:31,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:25:31,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:25:31,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:25:31,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:25:31,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:25:31,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:25:31,429 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:25:31,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:25:31,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:25:31,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:25:31,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:25:31,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:25:31,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:25:31,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:25:31,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:25:31,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:25:31,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:25:31,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:25:31,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:25:31,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:25:31,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:25:31,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:25:31,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:25:31,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:25:31,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:25:31,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:25:31,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:25:31,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:25:31,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:25:31,478 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:25:31,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:25:31,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:25:31,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:25:31,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:25:31,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:25:31,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:25:31,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:25:31,480 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:25:31,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:25:31,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:25:31,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:25:31,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:25:31,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:25:31,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:25:31,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:25:31,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:25:31,482 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:25:31,482 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:25:31,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:25:31,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:25:31,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:25:31,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:25:31,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:25:31,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:25:31,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:25:31,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:25:31,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:25:31,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:25:31,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:25:31,484 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:25:31,484 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:25:31,484 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:25:31,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:25:31,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:25:31,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:25:31,485 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2022-07-13 14:25:31,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:25:31,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:25:31,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:25:31,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:25:31,740 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:25:31,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-07-13 14:25:31,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47a86aed7/2ae99185df9f4ec9bb21e00e8b9f67ee/FLAG3feccce36 [2022-07-13 14:25:32,148 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:25:32,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-07-13 14:25:32,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47a86aed7/2ae99185df9f4ec9bb21e00e8b9f67ee/FLAG3feccce36 [2022-07-13 14:25:32,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47a86aed7/2ae99185df9f4ec9bb21e00e8b9f67ee [2022-07-13 14:25:32,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:25:32,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:25:32,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:25:32,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:25:32,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:25:32,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e94b653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32, skipping insertion in model container [2022-07-13 14:25:32,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:25:32,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:25:32,299 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/zonotope_tight.c[577,590] [2022-07-13 14:25:32,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:25:32,317 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:25:32,364 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/zonotope_tight.c[577,590] [2022-07-13 14:25:32,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:25:32,381 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:25:32,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32 WrapperNode [2022-07-13 14:25:32,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:25:32,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:25:32,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:25:32,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:25:32,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,406 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-07-13 14:25:32,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:25:32,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:25:32,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:25:32,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:25:32,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:25:32,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:25:32,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:25:32,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:25:32,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (1/1) ... [2022-07-13 14:25:32,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:25:32,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:25:32,462 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 14:25:32,484 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 14:25:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:25:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:25:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:25:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:25:32,539 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:25:32,540 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:25:35,439 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:25:35,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:25:35,442 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 14:25:35,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:25:35 BoogieIcfgContainer [2022-07-13 14:25:35,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:25:35,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:25:35,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:25:35,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:25:35,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:25:32" (1/3) ... [2022-07-13 14:25:35,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ef863c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:25:35, skipping insertion in model container [2022-07-13 14:25:35,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:25:32" (2/3) ... [2022-07-13 14:25:35,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ef863c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:25:35, skipping insertion in model container [2022-07-13 14:25:35,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:25:35" (3/3) ... [2022-07-13 14:25:35,448 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2022-07-13 14:25:35,456 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:25:35,456 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:25:35,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:25:35,496 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@fbae00e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@35adef25 [2022-07-13 14:25:35,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:25:35,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 14:25:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 14:25:35,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:25:35,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:25:35,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:25:35,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:25:35,506 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-07-13 14:25:35,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:25:35,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687320255] [2022-07-13 14:25:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:25:35,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:25:35,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:25:35,517 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 14:25:35,519 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 14:25:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:25:35,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 14:25:35,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:25:35,971 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 14:25:35,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:25:35,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:25:35,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687320255] [2022-07-13 14:25:35,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687320255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:25:35,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:25:35,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:25:35,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055915653] [2022-07-13 14:25:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:25:35,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:25:35,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:25:36,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:25:36,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:25:36,007 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 14:25:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:25:36,016 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-13 14:25:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:25:36,017 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-07-13 14:25:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:25:36,021 INFO L225 Difference]: With dead ends: 23 [2022-07-13 14:25:36,021 INFO L226 Difference]: Without dead ends: 9 [2022-07-13 14:25:36,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 14:25:36,026 INFO L413 NwaCegarLoop]: 13 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, 13 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 14:25:36,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:25:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-13 14:25:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-13 14:25:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 14:25:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-07-13 14:25:36,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-07-13 14:25:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:25:36,049 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-07-13 14:25:36,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 14:25:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-07-13 14:25:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 14:25:36,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:25:36,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:25:36,068 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 14:25:36,259 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 14:25:36,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:25:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:25:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-07-13 14:25:36,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:25:36,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845597136] [2022-07-13 14:25:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:25:36,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:25:36,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:25:36,262 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 14:25:36,264 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 14:25:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:25:36,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 14:25:36,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:25:47,330 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= |c_ULTIMATE.start_main_~y~0#1| (fp.div c_currentRoundingMode |ULTIMATE.start_main_~x~0#1| .cse0)) (fp.leq |ULTIMATE.start_main_~x~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-13 14:26:57,989 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq |ULTIMATE.start_main_~x~0#1| .cse0) (let ((.cse1 (fp.leq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse1)) (and .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) is different from true [2022-07-13 14:27:14,776 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq |ULTIMATE.start_main_~x~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) is different from false [2022-07-13 14:27:16,857 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.leq |ULTIMATE.start_main_~x~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) is different from true [2022-07-13 14:27:16,858 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 14:27:16,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:27:16,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:27:16,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845597136] [2022-07-13 14:27:16,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845597136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:27:16,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:27:16,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:27:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936256305] [2022-07-13 14:27:16,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:27:16,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:27:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:27:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:27:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=13, Unknown=4, NotChecked=24, Total=56 [2022-07-13 14:27:16,861 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 14:27:20,314 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.leq |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (.cse2 (fp.geq |c_ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)))) (and .cse0 (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= |c_ULTIMATE.start_main_~y~0#1| (fp.div c_currentRoundingMode |ULTIMATE.start_main_~x~0#1| .cse1)) (fp.leq |ULTIMATE.start_main_~x~0#1| .cse1) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) (or (and (or (not .cse2) (not .cse0)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse0 .cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)))) .cse2 (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-07-13 14:27:22,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:27:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:27:22,413 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-13 14:27:22,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 14:27:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 8 [2022-07-13 14:27:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:27:22,458 INFO L225 Difference]: With dead ends: 13 [2022-07-13 14:27:22,458 INFO L226 Difference]: Without dead ends: 9 [2022-07-13 14:27:22,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=22, Invalid=19, Unknown=5, NotChecked=44, Total=90 [2022-07-13 14:27:22,460 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 14:27:22,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 18 Unchecked, 3.2s Time] [2022-07-13 14:27:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-13 14:27:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-13 14:27:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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 14:27:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-13 14:27:22,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-13 14:27:22,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:27:22,463 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-13 14:27:22,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 14:27:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-13 14:27:22,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 14:27:22,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:27:22,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:27:22,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-13 14:27:22,675 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 14:27:22,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:27:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:27:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash 176701705, now seen corresponding path program 1 times [2022-07-13 14:27:22,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:27:22,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133370823] [2022-07-13 14:27:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:27:22,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:27:22,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:27:22,678 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 14:27:22,679 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 14:27:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:27:22,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:27:22,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:27:44,242 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 14:27:57,722 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= |c_ULTIMATE.start_main_~y~0#1| (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-13 14:29:41,620 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (let ((.cse1 (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse1)))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) is different from false [2022-07-13 14:29:43,658 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (let ((.cse1 (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))) (or (and .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse1)))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) is different from true [2022-07-13 14:30:04,345 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) is different from false [2022-07-13 14:30:06,385 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq |ULTIMATE.start_main_~x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))) is different from true [2022-07-13 14:30:06,385 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 14:30:06,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:30:06,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:30:06,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133370823] [2022-07-13 14:30:06,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133370823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:30:06,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:30:06,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:30:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243925203] [2022-07-13 14:30:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:30:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 14:30:06,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:30:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 14:30:06,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=18, Unknown=5, NotChecked=30, Total=72 [2022-07-13 14:30:06,387 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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 14:30:08,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:30:11,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:30:13,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:30:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:30:13,319 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2022-07-13 14:30:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 14:30:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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 8 [2022-07-13 14:30:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:30:13,367 INFO L225 Difference]: With dead ends: 9 [2022-07-13 14:30:13,367 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 14:30:13,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=24, Invalid=25, Unknown=5, NotChecked=36, Total=90 [2022-07-13 14:30:13,369 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-13 14:30:13,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 3 Unknown, 11 Unchecked, 6.5s Time] [2022-07-13 14:30:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 14:30:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 14:30:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 14:30:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 14:30:13,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-07-13 14:30:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:30:13,372 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 14:30:13,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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 14:30:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 14:30:13,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 14:30:13,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:30:13,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 14:30:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:30:13,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 14:30:13,580 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 14:30:13,580 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-13 14:30:13,580 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 14:30:13,580 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 14:30:13,580 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 14:30:13,580 INFO L902 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: true [2022-07-13 14:30:13,580 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 25) no Hoare annotation was computed. [2022-07-13 14:30:13,581 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-07-13 14:30:13,581 INFO L899 garLoopResultBuilder]: For program point L24-2(lines 24 25) no Hoare annotation was computed. [2022-07-13 14:30:13,581 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2022-07-13 14:30:13,581 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2022-07-13 14:30:13,581 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-13 14:30:13,581 INFO L902 garLoopResultBuilder]: At program point L14-3(line 14) the Hoare annotation is: true [2022-07-13 14:30:13,583 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 14:30:13,584 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:30:13,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:30:13 BoogieIcfgContainer [2022-07-13 14:30:13,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:30:13,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:30:13,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:30:13,589 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:30:13,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:25:35" (3/4) ... [2022-07-13 14:30:13,591 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 14:30:13,596 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-13 14:30:13,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 14:30:13,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 14:30:13,597 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 14:30:13,614 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 14:30:13,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:30:13,614 INFO L158 Benchmark]: Toolchain (without parser) took 281447.45ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 47.1MB in the beginning and 66.0MB in the end (delta: -19.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-13 14:30:13,615 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 32.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:30:13,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.07ms. Allocated memory is still 67.1MB. Free memory was 46.8MB in the beginning and 50.0MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 14:30:13,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.07ms. Allocated memory is still 67.1MB. Free memory was 50.0MB in the beginning and 48.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:30:13,615 INFO L158 Benchmark]: Boogie Preprocessor took 33.84ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 47.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:30:13,616 INFO L158 Benchmark]: RCFGBuilder took 3002.22ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 38.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:30:13,616 INFO L158 Benchmark]: TraceAbstraction took 278143.48ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 38.4MB in the beginning and 68.7MB in the end (delta: -30.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:30:13,616 INFO L158 Benchmark]: Witness Printer took 25.21ms. Allocated memory is still 90.2MB. Free memory was 68.7MB in the beginning and 66.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:30:13,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 32.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.07ms. Allocated memory is still 67.1MB. Free memory was 46.8MB in the beginning and 50.0MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.07ms. Allocated memory is still 67.1MB. Free memory was 50.0MB in the beginning and 48.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.84ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 47.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 3002.22ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 38.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 278143.48ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 38.4MB in the beginning and 68.7MB in the end (delta: -30.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.21ms. Allocated memory is still 90.2MB. Free memory was 68.7MB in the beginning and 66.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 278.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 9.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 29 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 19, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 263.7s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 6 QuantifiedInterpolants, 348 SizeOfPredicates, 14 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-13 14:30:13,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE