./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/floats-cbmc-regression/float-no-simp6.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 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:10:40,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:10:40,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:10:40,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:10:40,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:10:40,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:10:40,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:10:40,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:10:40,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:10:40,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:10:40,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:10:40,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:10:40,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:10:40,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:10:40,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:10:40,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:10:40,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:10:40,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:10:40,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:10:40,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:10:40,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:10:40,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:10:40,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:10:40,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:10:40,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:10:40,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:10:40,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:10:40,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:10:40,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:10:40,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:10:40,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:10:40,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:10:40,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:10:40,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:10:40,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:10:40,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:10:40,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:10:40,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:10:40,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:10:40,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:10:40,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:10:40,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:10:40,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:10:40,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:10:40,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:10:40,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:10:40,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:10:40,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:10:40,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:10:40,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:10:40,356 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:10:40,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:10:40,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:10:40,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:10:40,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:10:40,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:10:40,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:10:40,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:10:40,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:10:40,359 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:10:40,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:10:40,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:10:40,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:10:40,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:10:40,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:10:40,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:10:40,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:10:40,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:10:40,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:10:40,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:10:40,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:10:40,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:10:40,361 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:10:40,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:10:40,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:10:40,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:10:40,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 [2021-12-14 13:10:40,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:10:40,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:10:40,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:10:40,578 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:10:40,578 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:10:40,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-12-14 13:10:40,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79689229/c78d3067305c4a0a82de7d2fc652cdc7/FLAG64280280b [2021-12-14 13:10:41,044 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:10:41,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-12-14 13:10:41,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79689229/c78d3067305c4a0a82de7d2fc652cdc7/FLAG64280280b [2021-12-14 13:10:41,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79689229/c78d3067305c4a0a82de7d2fc652cdc7 [2021-12-14 13:10:41,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:10:41,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:10:41,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:10:41,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:10:41,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:10:41,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfc4e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41, skipping insertion in model container [2021-12-14 13:10:41,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:10:41,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:10:41,284 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/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-12-14 13:10:41,293 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/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-12-14 13:10:41,296 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/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-12-14 13:10:41,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:10:41,306 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:10:41,321 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/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-12-14 13:10:41,326 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/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-12-14 13:10:41,328 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/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-12-14 13:10:41,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:10:41,339 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:10:41,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41 WrapperNode [2021-12-14 13:10:41,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:10:41,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:10:41,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:10:41,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:10:41,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,364 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2021-12-14 13:10:41,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:10:41,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:10:41,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:10:41,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:10:41,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:10:41,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:10:41,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:10:41,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:10:41,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (1/1) ... [2021-12-14 13:10:41,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:10:41,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:10:41,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 13:10:41,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 13:10:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:10:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:10:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:10:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:10:41,531 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:10:41,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:10:41,586 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:10:41,592 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:10:41,592 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 13:10:41,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:10:41 BoogieIcfgContainer [2021-12-14 13:10:41,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:10:41,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:10:41,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:10:41,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:10:41,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:10:41" (1/3) ... [2021-12-14 13:10:41,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b74985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:10:41, skipping insertion in model container [2021-12-14 13:10:41,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:41" (2/3) ... [2021-12-14 13:10:41,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b74985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:10:41, skipping insertion in model container [2021-12-14 13:10:41,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:10:41" (3/3) ... [2021-12-14 13:10:41,601 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-12-14 13:10:41,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:10:41,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-14 13:10:41,644 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:10:41,650 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:10:41,650 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-14 13:10:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:10:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-14 13:10:41,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:10:41,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-14 13:10:41,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:10:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:10:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-12-14 13:10:41,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:10:41,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876380460] [2021-12-14 13:10:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:10:41,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:10:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:10:41,756 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 13:10:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:10:41,797 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 13:10:41,799 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 13:10:41,800 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-14 13:10:41,816 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-12-14 13:10:41,817 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-12-14 13:10:41,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:10:41,822 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-14 13:10:41,824 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:10:41,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:10:41 BoogieIcfgContainer [2021-12-14 13:10:41,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:10:41,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:10:41,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:10:41,847 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:10:41,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:10:41" (3/4) ... [2021-12-14 13:10:41,851 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 13:10:41,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:10:41,853 INFO L158 Benchmark]: Toolchain (without parser) took 774.48ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 68.6MB in the beginning and 94.5MB in the end (delta: -25.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:10:41,853 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory was 55.2MB in the beginning and 55.1MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:10:41,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.55ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 71.6MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:10:41,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.82ms. Allocated memory is still 98.6MB. Free memory was 71.6MB in the beginning and 70.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:10:41,860 INFO L158 Benchmark]: Boogie Preprocessor took 14.56ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 69.3MB in the end (delta: 938.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:10:41,861 INFO L158 Benchmark]: RCFGBuilder took 213.33ms. Allocated memory is still 98.6MB. Free memory was 69.0MB in the beginning and 60.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:10:41,862 INFO L158 Benchmark]: TraceAbstraction took 247.53ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 60.6MB in the beginning and 94.9MB in the end (delta: -34.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-12-14 13:10:41,862 INFO L158 Benchmark]: Witness Printer took 5.38ms. Allocated memory is still 119.5MB. Free memory was 94.8MB in the beginning and 94.5MB in the end (delta: 309.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:10:41,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory was 55.2MB in the beginning and 55.1MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.55ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 71.6MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.82ms. Allocated memory is still 98.6MB. Free memory was 71.6MB in the beginning and 70.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.56ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 69.3MB in the end (delta: 938.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 213.33ms. Allocated memory is still 98.6MB. Free memory was 69.0MB in the beginning and 60.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 247.53ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 60.6MB in the beginning and 94.9MB in the end (delta: -34.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Witness Printer took 5.38ms. Allocated memory is still 119.5MB. Free memory was 94.8MB in the beginning and 94.5MB in the end (delta: 309.8kB). 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: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L49] CALL multiply() [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L25] COND TRUE !(res == 0x1.0p-126f) VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L25] reach_error() VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] - UnprovableResult [Line: 35]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-14 13:10:41,920 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/floats-cbmc-regression/float-no-simp6.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 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:10:43,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:10:43,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:10:43,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:10:43,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:10:43,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:10:43,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:10:43,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:10:43,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:10:43,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:10:43,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:10:43,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:10:43,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:10:43,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:10:43,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:10:43,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:10:43,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:10:43,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:10:43,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:10:43,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:10:43,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:10:43,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:10:43,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:10:43,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:10:43,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:10:43,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:10:43,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:10:43,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:10:43,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:10:43,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:10:43,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:10:43,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:10:43,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:10:43,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:10:43,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:10:43,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:10:43,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:10:43,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:10:43,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:10:43,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:10:43,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:10:43,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 13:10:43,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:10:43,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:10:43,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:10:43,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:10:43,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:10:43,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:10:43,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:10:43,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:10:43,935 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:10:43,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:10:43,936 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:10:43,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:10:43,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:10:43,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:10:43,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:10:43,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:10:43,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 13:10:43,937 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 13:10:43,938 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 13:10:43,938 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:10:43,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:10:43,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:10:43,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:10:43,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:10:43,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:10:43,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:10:43,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:10:43,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:10:43,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:10:43,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:10:43,949 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 13:10:43,949 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 13:10:43,949 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:10:43,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:10:43,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:10:43,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:10:43,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 13:10:43,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 [2021-12-14 13:10:44,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:10:44,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:10:44,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:10:44,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:10:44,339 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:10:44,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-12-14 13:10:44,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3988fd9/eb4435609f244033af25b387f5c1d1a0/FLAGbd61a76a3 [2021-12-14 13:10:44,781 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:10:44,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-12-14 13:10:44,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3988fd9/eb4435609f244033af25b387f5c1d1a0/FLAGbd61a76a3 [2021-12-14 13:10:45,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3988fd9/eb4435609f244033af25b387f5c1d1a0 [2021-12-14 13:10:45,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:10:45,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:10:45,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:10:45,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:10:45,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:10:45,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c67b3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45, skipping insertion in model container [2021-12-14 13:10:45,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:10:45,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:10:45,365 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/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-12-14 13:10:45,375 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/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-12-14 13:10:45,386 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/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-12-14 13:10:45,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:10:45,408 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:10:45,432 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/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-12-14 13:10:45,438 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/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-12-14 13:10:45,443 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/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-12-14 13:10:45,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:10:45,464 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:10:45,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45 WrapperNode [2021-12-14 13:10:45,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:10:45,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:10:45,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:10:45,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:10:45,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,501 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2021-12-14 13:10:45,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:10:45,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:10:45,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:10:45,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:10:45,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:10:45,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:10:45,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:10:45,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:10:45,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (1/1) ... [2021-12-14 13:10:45,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:10:45,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:10:45,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 13:10:45,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 13:10:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:10:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 13:10:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:10:45,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:10:45,667 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:10:45,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:10:46,286 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:10:46,290 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:10:46,291 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 13:10:46,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:10:46 BoogieIcfgContainer [2021-12-14 13:10:46,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:10:46,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:10:46,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:10:46,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:10:46,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:10:45" (1/3) ... [2021-12-14 13:10:46,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2299df44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:10:46, skipping insertion in model container [2021-12-14 13:10:46,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:10:45" (2/3) ... [2021-12-14 13:10:46,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2299df44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:10:46, skipping insertion in model container [2021-12-14 13:10:46,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:10:46" (3/3) ... [2021-12-14 13:10:46,299 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-12-14 13:10:46,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:10:46,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-14 13:10:46,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:10:46,348 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:10:46,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-14 13:10:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:10:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-14 13:10:46,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:10:46,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-14 13:10:46,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:10:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:10:46,368 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-12-14 13:10:46,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:10:46,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621622598] [2021-12-14 13:10:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:10:46,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:10:46,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:10:46,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 13:10:46,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 13:10:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:10:46,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 13:10:46,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:10:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:10:46,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:10:46,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:10:46,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621622598] [2021-12-14 13:10:46,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621622598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:10:46,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:10:46,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 13:10:46,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356977006] [2021-12-14 13:10:46,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:10:46,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 13:10:46,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:10:46,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 13:10:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:10:46,710 INFO L87 Difference]: Start difference. First operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:10:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:10:47,067 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-12-14 13:10:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 13:10:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-12-14 13:10:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:10:47,074 INFO L225 Difference]: With dead ends: 29 [2021-12-14 13:10:47,075 INFO L226 Difference]: Without dead ends: 11 [2021-12-14 13:10:47,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:10:47,082 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 13:10:47,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 13:10:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-14 13:10:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-14 13:10:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:10:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-12-14 13:10:47,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2021-12-14 13:10:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:10:47,110 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-12-14 13:10:47,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:10:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-12-14 13:10:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-14 13:10:47,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:10:47,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-14 13:10:47,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 13:10:47,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:10:47,322 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:10:47,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:10:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-12-14 13:10:47,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:10:47,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636500020] [2021-12-14 13:10:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:10:47,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:10:47,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:10:47,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 13:10:47,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 13:10:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:10:47,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 13:10:47,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:10:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:10:47,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:10:47,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:10:47,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636500020] [2021-12-14 13:10:47,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636500020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:10:47,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:10:47,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 13:10:47,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832557380] [2021-12-14 13:10:47,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:10:47,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 13:10:47,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:10:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 13:10:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:10:47,588 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:10:47,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:10:47,875 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-12-14 13:10:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 13:10:47,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-14 13:10:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:10:47,876 INFO L225 Difference]: With dead ends: 11 [2021-12-14 13:10:47,876 INFO L226 Difference]: Without dead ends: 9 [2021-12-14 13:10:47,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:10:47,877 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 13:10:47,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 13:10:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-14 13:10:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-14 13:10:47,880 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) [2021-12-14 13:10:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-14 13:10:47,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2021-12-14 13:10:47,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:10:47,881 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-14 13:10:47,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:10:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-14 13:10:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-14 13:10:47,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:10:47,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:10:47,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 13:10:48,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:10:48,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:10:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:10:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-12-14 13:10:48,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:10:48,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000954753] [2021-12-14 13:10:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:10:48,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:10:48,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:10:48,091 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) [2021-12-14 13:10:48,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 13:10:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:10:48,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 13:10:48,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:10:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:10:48,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:10:48,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:10:48,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000954753] [2021-12-14 13:10:48,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000954753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:10:48,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:10:48,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 13:10:48,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822075558] [2021-12-14 13:10:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:10:48,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 13:10:48,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:10:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 13:10:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:10:48,374 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-12-14 13:10:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:10:48,942 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-12-14 13:10:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 13:10:48,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2021-12-14 13:10:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:10:48,952 INFO L225 Difference]: With dead ends: 9 [2021-12-14 13:10:48,952 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 13:10:48,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:10:48,953 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 13:10:48,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 13:10:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 13:10:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 13:10:48,955 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) [2021-12-14 13:10:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 13:10:48,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-12-14 13:10:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:10:48,955 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 13:10:48,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-12-14 13:10:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 13:10:48,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 13:10:48,957 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-14 13:10:48,958 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-12-14 13:10:48,958 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-12-14 13:10:48,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 13:10:49,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:10:49,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-14 13:10:49,175 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-14 13:10:49,175 INFO L858 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-12-14 13:10:49,175 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-12-14 13:10:49,175 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-12-14 13:10:49,176 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-12-14 13:10:49,176 INFO L858 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2021-12-14 13:10:49,176 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 45) no Hoare annotation was computed. [2021-12-14 13:10:49,176 INFO L858 garLoopResultBuilder]: For program point L5(lines 5 26) no Hoare annotation was computed. [2021-12-14 13:10:49,176 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-14 13:10:49,176 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-14 13:10:49,177 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-14 13:10:49,177 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 36) no Hoare annotation was computed. [2021-12-14 13:10:49,177 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2021-12-14 13:10:49,177 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-12-14 13:10:49,177 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 52) no Hoare annotation was computed. [2021-12-14 13:10:49,178 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-12-14 13:10:49,178 INFO L858 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-12-14 13:10:49,183 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-14 13:10:49,185 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:10:49,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:10:49 BoogieIcfgContainer [2021-12-14 13:10:49,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:10:49,188 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:10:49,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:10:49,189 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:10:49,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:10:46" (3/4) ... [2021-12-14 13:10:49,191 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 13:10:49,210 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-14 13:10:49,210 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-14 13:10:49,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 13:10:49,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 13:10:49,242 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 13:10:49,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:10:49,243 INFO L158 Benchmark]: Toolchain (without parser) took 4031.82ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.0MB in the beginning and 24.6MB in the end (delta: -550.3kB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-14 13:10:49,244 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.1MB in the end (delta: 31.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:10:49,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.21ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.8MB in the beginning and 42.4MB in the end (delta: -18.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-12-14 13:10:49,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.54ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 40.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:10:49,245 INFO L158 Benchmark]: Boogie Preprocessor took 38.44ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 39.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:10:49,245 INFO L158 Benchmark]: RCFGBuilder took 751.01ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 31.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 13:10:49,245 INFO L158 Benchmark]: TraceAbstraction took 2894.43ms. Allocated memory is still 58.7MB. Free memory was 31.4MB in the beginning and 27.2MB in the end (delta: 4.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-12-14 13:10:49,246 INFO L158 Benchmark]: Witness Printer took 54.24ms. Allocated memory is still 58.7MB. Free memory was 27.0MB in the beginning and 24.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:10:49,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 30.2MB in the beginning and 30.1MB in the end (delta: 31.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.21ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.8MB in the beginning and 42.4MB in the end (delta: -18.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.54ms. Allocated memory is still 58.7MB. Free memory was 42.4MB in the beginning and 40.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.44ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 39.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 751.01ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 31.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2894.43ms. Allocated memory is still 58.7MB. Free memory was 31.4MB in the beginning and 27.2MB in the end (delta: 4.1MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Witness Printer took 54.24ms. Allocated memory is still 58.7MB. Free memory was 27.0MB in the beginning and 24.6MB in the end (delta: 2.4MB). 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: 25]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: 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, 17 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 11 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 14 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-14 13:10:49,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE