./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0620a.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 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:06:00,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:06:00,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:06:00,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:06:00,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:06:00,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:06:00,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:06:00,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:06:00,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:06:00,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:06:00,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:06:00,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:06:00,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:06:00,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:06:00,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:06:00,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:06:00,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:06:00,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:06:00,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:06:00,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:06:00,369 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:06:00,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:06:00,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:06:00,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:06:00,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:06:00,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:06:00,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:06:00,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:06:00,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:06:00,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:06:00,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:06:00,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:06:00,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:06:00,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:06:00,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:06:00,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:06:00,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:06:00,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:06:00,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:06:00,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:06:00,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:06:00,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:06:00,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:06:00,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:06:00,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:06:00,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:06:00,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:06:00,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:06:00,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:06:00,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:06:00,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:06:00,413 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:06:00,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:06:00,414 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:06:00,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:06:00,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:06:00,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:06:00,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:06:00,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:06:00,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:06:00,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:06:00,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:06:00,416 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:06:00,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:06:00,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:06:00,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:06:00,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:06:00,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:06:00,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:06:00,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:06:00,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:06:00,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:06:00,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:06:00,417 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:06:00,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:06:00,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:06:00,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 [2022-07-12 03:06:00,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:06:00,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:06:00,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:06:00,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:06:00,726 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:06:00,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2022-07-12 03:06:00,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28a4c703/a04db1899fa34934a22382282a08a362/FLAG2127ba22f [2022-07-12 03:06:01,148 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:06:01,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2022-07-12 03:06:01,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28a4c703/a04db1899fa34934a22382282a08a362/FLAG2127ba22f [2022-07-12 03:06:01,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28a4c703/a04db1899fa34934a22382282a08a362 [2022-07-12 03:06:01,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:06:01,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:06:01,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:06:01,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:06:01,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:06:01,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5566927d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01, skipping insertion in model container [2022-07-12 03:06:01,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:06:01,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:06:01,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2022-07-12 03:06:01,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:06:01,354 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:06:01,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2022-07-12 03:06:01,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:06:01,402 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:06:01,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01 WrapperNode [2022-07-12 03:06:01,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:06:01,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:06:01,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:06:01,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:06:01,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,442 INFO L137 Inliner]: procedures = 19, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 210 [2022-07-12 03:06:01,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:06:01,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:06:01,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:06:01,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:06:01,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:06:01,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:06:01,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:06:01,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:06:01,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (1/1) ... [2022-07-12 03:06:01,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:06:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:06:01,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 03:06:01,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 03:06:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:06:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:06:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 03:06:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-12 03:06:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 03:06:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-12 03:06:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:06:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:06:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 03:06:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-07-12 03:06:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:06:01,693 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:06:01,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:06:02,002 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:06:02,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:06:02,009 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 03:06:02,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:06:02 BoogieIcfgContainer [2022-07-12 03:06:02,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:06:02,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:06:02,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:06:02,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:06:02,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:06:01" (1/3) ... [2022-07-12 03:06:02,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c5b873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:06:02, skipping insertion in model container [2022-07-12 03:06:02,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:01" (2/3) ... [2022-07-12 03:06:02,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c5b873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:06:02, skipping insertion in model container [2022-07-12 03:06:02,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:06:02" (3/3) ... [2022-07-12 03:06:02,039 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2022-07-12 03:06:02,063 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:06:02,064 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:06:02,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:06:02,117 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@182bd0c1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@282518a [2022-07-12 03:06:02,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:06:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 38 states have (on average 1.6842105263157894) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:02,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 03:06:02,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:06:02,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:06:02,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:06:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:06:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash -897861633, now seen corresponding path program 1 times [2022-07-12 03:06:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:06:02,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854799191] [2022-07-12 03:06:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:06:02,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:06:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:06:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:06:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:06:02,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854799191] [2022-07-12 03:06:02,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854799191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:06:02,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:06:02,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:06:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138934358] [2022-07-12 03:06:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:06:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:06:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:06:02,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:06:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:06:02,323 INFO L87 Difference]: Start difference. First operand has 40 states, 38 states have (on average 1.6842105263157894) internal successors, (64), 39 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:06:02,343 INFO L93 Difference]: Finished difference Result 78 states and 126 transitions. [2022-07-12 03:06:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:06:02,345 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2022-07-12 03:06:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:06:02,359 INFO L225 Difference]: With dead ends: 78 [2022-07-12 03:06:02,360 INFO L226 Difference]: Without dead ends: 37 [2022-07-12 03:06:02,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:06:02,368 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:06:02,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:06:02,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-12 03:06:02,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-07-12 03:06:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2022-07-12 03:06:02,418 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 10 [2022-07-12 03:06:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:06:02,418 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2022-07-12 03:06:02,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2022-07-12 03:06:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-12 03:06:02,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:06:02,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:06:02,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:06:02,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:06:02,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:06:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1061798466, now seen corresponding path program 1 times [2022-07-12 03:06:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:06:02,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378295446] [2022-07-12 03:06:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:06:02,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:06:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:06:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:06:02,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:06:02,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378295446] [2022-07-12 03:06:02,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378295446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:06:02,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:06:02,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:06:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266669071] [2022-07-12 03:06:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:06:02,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 03:06:02,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:06:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 03:06:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:06:02,551 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:06:02,580 INFO L93 Difference]: Finished difference Result 80 states and 106 transitions. [2022-07-12 03:06:02,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 03:06:02,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-12 03:06:02,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:06:02,581 INFO L225 Difference]: With dead ends: 80 [2022-07-12 03:06:02,581 INFO L226 Difference]: Without dead ends: 55 [2022-07-12 03:06:02,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 03:06:02,582 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:06:02,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 79 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:06:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-12 03:06:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2022-07-12 03:06:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2022-07-12 03:06:02,587 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 11 [2022-07-12 03:06:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:06:02,587 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2022-07-12 03:06:02,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:02,587 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2022-07-12 03:06:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:06:02,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:06:02,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:06:02,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:06:02,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:06:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:06:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1924524549, now seen corresponding path program 1 times [2022-07-12 03:06:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:06:02,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684640284] [2022-07-12 03:06:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:06:02,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:06:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:06:02,626 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 03:06:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:06:02,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 03:06:02,682 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 03:06:02,683 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:06:02,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 03:06:02,686 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-12 03:06:02,688 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:06:02,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:06:02 BoogieIcfgContainer [2022-07-12 03:06:02,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:06:02,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:06:02,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:06:02,716 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:06:02,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:06:02" (3/4) ... [2022-07-12 03:06:02,718 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 03:06:02,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:06:02,719 INFO L158 Benchmark]: Toolchain (without parser) took 1551.54ms. Allocated memory is still 98.6MB. Free memory was 64.6MB in the beginning and 52.4MB in the end (delta: 12.2MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2022-07-12 03:06:02,719 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:06:02,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.51ms. Allocated memory is still 98.6MB. Free memory was 64.5MB in the beginning and 73.5MB in the end (delta: -9.0MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-07-12 03:06:02,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.27ms. Allocated memory is still 98.6MB. Free memory was 73.5MB in the beginning and 70.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:06:02,726 INFO L158 Benchmark]: Boogie Preprocessor took 38.19ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 69.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:06:02,727 INFO L158 Benchmark]: RCFGBuilder took 531.93ms. Allocated memory is still 98.6MB. Free memory was 68.7MB in the beginning and 54.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-12 03:06:02,727 INFO L158 Benchmark]: TraceAbstraction took 699.01ms. Allocated memory is still 98.6MB. Free memory was 53.7MB in the beginning and 52.9MB in the end (delta: 769.7kB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2022-07-12 03:06:02,728 INFO L158 Benchmark]: Witness Printer took 2.78ms. Allocated memory is still 98.6MB. Free memory was 52.9MB in the beginning and 52.4MB in the end (delta: 441.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:06:02,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.51ms. Allocated memory is still 98.6MB. Free memory was 64.5MB in the beginning and 73.5MB in the end (delta: -9.0MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.27ms. Allocated memory is still 98.6MB. Free memory was 73.5MB in the beginning and 70.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.19ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 69.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 531.93ms. Allocated memory is still 98.6MB. Free memory was 68.7MB in the beginning and 54.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 699.01ms. Allocated memory is still 98.6MB. Free memory was 53.7MB in the beginning and 52.9MB in the end (delta: 769.7kB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. * Witness Printer took 2.78ms. Allocated memory is still 98.6MB. Free memory was 52.9MB in the beginning and 52.4MB in the end (delta: 441.0kB). 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: 144]: 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 143, overapproximation of someUnaryDOUBLEoperation at line 46. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L139] float x = 0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L65] COND FALSE !(ix >= 0x50800000) VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L73] COND TRUE ix < 0x3ee00000 VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L74] COND TRUE ix < 0x31000000 VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L75] COND TRUE huge_atan + x > one_atan [L76] return x; VAL [\old(x)=0, \result=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=0, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L143] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L144] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 100 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 03:06:02,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0620a.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 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:06:04,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:06:04,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:06:04,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:06:04,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:06:04,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:06:04,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:06:04,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:06:04,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:06:04,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:06:04,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:06:04,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:06:04,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:06:04,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:06:04,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:06:04,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:06:04,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:06:04,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:06:04,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:06:04,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:06:04,679 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:06:04,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:06:04,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:06:04,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:06:04,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:06:04,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:06:04,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:06:04,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:06:04,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:06:04,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:06:04,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:06:04,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:06:04,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:06:04,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:06:04,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:06:04,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:06:04,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:06:04,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:06:04,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:06:04,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:06:04,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:06:04,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:06:04,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 03:06:04,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:06:04,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:06:04,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:06:04,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:06:04,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:06:04,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:06:04,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:06:04,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:06:04,730 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:06:04,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:06:04,731 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:06:04,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:06:04,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:06:04,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:06:04,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:06:04,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:06:04,732 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 03:06:04,732 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 03:06:04,732 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 03:06:04,732 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:06:04,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:06:04,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:06:04,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:06:04,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:06:04,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:06:04,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:06:04,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:06:04,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:06:04,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:06:04,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:06:04,734 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 03:06:04,734 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 03:06:04,734 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:06:04,734 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:06:04,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:06:04,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 03:06:04,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0682c5b0aa15583147a7e08f281b31c84f28e6f8db41872cc8e834f12ff21a47 [2022-07-12 03:06:05,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:06:05,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:06:05,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:06:05,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:06:05,028 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:06:05,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2022-07-12 03:06:05,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3904bd8cb/c5a72e4d175a438f99094790c05fdbfe/FLAG63ec1894b [2022-07-12 03:06:05,499 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:06:05,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2022-07-12 03:06:05,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3904bd8cb/c5a72e4d175a438f99094790c05fdbfe/FLAG63ec1894b [2022-07-12 03:06:05,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3904bd8cb/c5a72e4d175a438f99094790c05fdbfe [2022-07-12 03:06:05,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:06:05,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:06:05,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:06:05,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:06:05,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:06:05,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@724726b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05, skipping insertion in model container [2022-07-12 03:06:05,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:06:05,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:06:05,743 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2022-07-12 03:06:05,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:06:05,757 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:06:05,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2022-07-12 03:06:05,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:06:05,797 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:06:05,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05 WrapperNode [2022-07-12 03:06:05,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:06:05,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:06:05,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:06:05,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:06:05,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,857 INFO L137 Inliner]: procedures = 22, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2022-07-12 03:06:05,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:06:05,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:06:05,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:06:05,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:06:05,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:06:05,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:06:05,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:06:05,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:06:05,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (1/1) ... [2022-07-12 03:06:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:06:05,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:06:05,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 03:06:05,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 03:06:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:06:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-07-12 03:06:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 03:06:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 03:06:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-07-12 03:06:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 03:06:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:06:06,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:06:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-07-12 03:06:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 03:06:06,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:06:06,159 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:06:06,160 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:06:14,443 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:06:14,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:06:14,447 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 03:06:14,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:06:14 BoogieIcfgContainer [2022-07-12 03:06:14,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:06:14,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:06:14,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:06:14,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:06:14,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:06:05" (1/3) ... [2022-07-12 03:06:14,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5aeaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:06:14, skipping insertion in model container [2022-07-12 03:06:14,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:06:05" (2/3) ... [2022-07-12 03:06:14,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5aeaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:06:14, skipping insertion in model container [2022-07-12 03:06:14,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:06:14" (3/3) ... [2022-07-12 03:06:14,456 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2022-07-12 03:06:14,477 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:06:14,477 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:06:14,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:06:14,566 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@755325d5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@632ba141 [2022-07-12 03:06:14,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:06:14,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:14,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 03:06:14,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:06:14,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:06:14,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:06:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:06:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2022-07-12 03:06:14,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:06:14,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287330944] [2022-07-12 03:06:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:06:14,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:06:14,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:06:14,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:06:14,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 03:06:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:06:15,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 03:06:15,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:06:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:06:15,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:06:15,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:06:15,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287330944] [2022-07-12 03:06:15,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287330944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:06:15,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:06:15,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:06:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735218093] [2022-07-12 03:06:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:06:15,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:06:15,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:06:15,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:06:15,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:06:15,351 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:06:15,361 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2022-07-12 03:06:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:06:15,363 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2022-07-12 03:06:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:06:15,368 INFO L225 Difference]: With dead ends: 72 [2022-07-12 03:06:15,368 INFO L226 Difference]: Without dead ends: 34 [2022-07-12 03:06:15,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:06:15,372 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:06:15,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:06:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-12 03:06:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-12 03:06:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2022-07-12 03:06:15,392 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2022-07-12 03:06:15,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:06:15,406 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2022-07-12 03:06:15,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:15,407 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-07-12 03:06:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-12 03:06:15,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:06:15,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:06:15,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:06:15,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:06:15,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:06:15,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:06:15,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2022-07-12 03:06:15,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:06:15,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345892924] [2022-07-12 03:06:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:06:15,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:06:15,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:06:15,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:06:15,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 03:06:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:06:16,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 03:06:16,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:06:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:06:16,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:06:16,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:06:16,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345892924] [2022-07-12 03:06:16,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345892924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:06:16,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:06:16,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:06:16,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059755532] [2022-07-12 03:06:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:06:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:06:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:06:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:06:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:06:16,641 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:19,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:21,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:23,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:26,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:27,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:29,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:31,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:31,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:06:31,336 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-07-12 03:06:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 03:06:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-12 03:06:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:06:31,390 INFO L225 Difference]: With dead ends: 43 [2022-07-12 03:06:31,390 INFO L226 Difference]: Without dead ends: 32 [2022-07-12 03:06:31,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:06:31,391 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-07-12 03:06:31,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 5 Unknown, 13 Unchecked, 14.5s Time] [2022-07-12 03:06:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-12 03:06:31,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-07-12 03:06:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-07-12 03:06:31,399 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 11 [2022-07-12 03:06:31,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:06:31,400 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-07-12 03:06:31,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-07-12 03:06:31,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 03:06:31,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:06:31,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:06:31,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 03:06:31,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:06:31,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:06:31,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:06:31,608 INFO L85 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2022-07-12 03:06:31,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:06:31,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429484613] [2022-07-12 03:06:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:06:31,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:06:31,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:06:31,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:06:31,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 03:06:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:06:32,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 03:06:32,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:06:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:06:32,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:06:32,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:06:32,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429484613] [2022-07-12 03:06:32,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429484613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:06:32,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:06:32,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:06:32,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847865217] [2022-07-12 03:06:32,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:06:32,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:06:32,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:06:32,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:06:32,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:06:32,916 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:35,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:38,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:40,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:41,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:44,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:47,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:49,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:06:49,405 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-07-12 03:06:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:06:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2022-07-12 03:06:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:06:49,410 INFO L225 Difference]: With dead ends: 45 [2022-07-12 03:06:49,410 INFO L226 Difference]: Without dead ends: 42 [2022-07-12 03:06:49,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:06:49,411 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-07-12 03:06:49,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 108 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 5 Unknown, 0 Unchecked, 16.3s Time] [2022-07-12 03:06:49,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-12 03:06:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2022-07-12 03:06:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-07-12 03:06:49,429 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 13 [2022-07-12 03:06:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:06:49,429 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-07-12 03:06:49,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-07-12 03:06:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 03:06:49,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:06:49,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:06:49,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 03:06:49,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:06:49,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:06:49,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:06:49,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1612074501, now seen corresponding path program 1 times [2022-07-12 03:06:49,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:06:49,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478773410] [2022-07-12 03:06:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:06:49,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:06:49,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:06:49,654 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:06:49,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 03:06:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:06:51,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 03:06:51,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:06:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:06:51,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:06:51,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:06:51,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478773410] [2022-07-12 03:06:51,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478773410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:06:51,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:06:51,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:06:51,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946125212] [2022-07-12 03:06:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:06:51,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:06:51,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:06:51,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:06:51,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:06:51,782 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:06:54,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:56,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:06:58,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:00,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:02,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:05,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:07:05,698 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2022-07-12 03:07:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:07:05,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-12 03:07:05,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:07:05,757 INFO L225 Difference]: With dead ends: 48 [2022-07-12 03:07:05,757 INFO L226 Difference]: Without dead ends: 34 [2022-07-12 03:07:05,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:07:05,758 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-07-12 03:07:05,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 109 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 4 Unknown, 12 Unchecked, 13.6s Time] [2022-07-12 03:07:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-12 03:07:05,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-12 03:07:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-07-12 03:07:05,761 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 15 [2022-07-12 03:07:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:07:05,761 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-07-12 03:07:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-07-12 03:07:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 03:07:05,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:07:05,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:07:05,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 03:07:05,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:07:05,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:07:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:07:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2022-07-12 03:07:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:07:05,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398865386] [2022-07-12 03:07:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:07:05,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:07:05,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:07:05,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:07:05,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 03:07:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:07:07,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 03:07:07,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:07:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:07:08,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:07:08,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:07:08,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398865386] [2022-07-12 03:07:08,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398865386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:07:08,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:07:08,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 03:07:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084611536] [2022-07-12 03:07:08,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:07:08,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:07:08,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:07:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:07:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:07:08,400 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:10,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:13,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:15,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:18,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:20,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:22,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:24,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:26,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:28,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:07:28,430 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2022-07-12 03:07:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:07:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2022-07-12 03:07:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:07:28,458 INFO L225 Difference]: With dead ends: 55 [2022-07-12 03:07:28,458 INFO L226 Difference]: Without dead ends: 41 [2022-07-12 03:07:28,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:07:28,459 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:07:28,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 56 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 20.0s Time] [2022-07-12 03:07:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-07-12 03:07:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2022-07-12 03:07:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-07-12 03:07:28,467 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 16 [2022-07-12 03:07:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:07:28,467 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-07-12 03:07:28,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-07-12 03:07:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 03:07:28,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:07:28,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:07:28,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 03:07:28,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:07:28,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:07:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:07:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2022-07-12 03:07:28,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:07:28,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804096723] [2022-07-12 03:07:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:07:28,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:07:28,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:07:28,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:07:28,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 03:07:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:07:29,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 03:07:29,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:07:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:07:30,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:07:30,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:07:30,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804096723] [2022-07-12 03:07:30,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804096723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:07:30,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:07:30,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 03:07:30,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813257291] [2022-07-12 03:07:30,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:07:30,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 03:07:30,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:07:30,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 03:07:30,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 03:07:30,667 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:34,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:37,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:39,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:41,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:44,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:45,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 03:07:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:07:45,710 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-07-12 03:07:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 03:07:45,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-12 03:07:45,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:07:45,711 INFO L225 Difference]: With dead ends: 40 [2022-07-12 03:07:45,711 INFO L226 Difference]: Without dead ends: 29 [2022-07-12 03:07:45,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-12 03:07:45,712 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:07:45,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 220 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 14.2s Time] [2022-07-12 03:07:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-12 03:07:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-12 03:07:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-07-12 03:07:45,719 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 17 [2022-07-12 03:07:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:07:45,722 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-07-12 03:07:45,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-07-12 03:07:45,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-12 03:07:45,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:07:45,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:07:45,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-12 03:07:45,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:07:45,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:07:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:07:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1278549058, now seen corresponding path program 1 times [2022-07-12 03:07:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 03:07:45,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654571579] [2022-07-12 03:07:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:07:45,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 03:07:45,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 03:07:45,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 03:07:46,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 03:07:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:07:47,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 03:07:47,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:07:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:07:48,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 03:07:48,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 03:07:48,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654571579] [2022-07-12 03:07:48,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654571579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:07:48,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:07:48,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:07:48,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918322305] [2022-07-12 03:07:48,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:07:48,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:07:48,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 03:07:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:07:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:07:48,083 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:07:48,316 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-07-12 03:07:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:07:48,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-12 03:07:48,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:07:48,316 INFO L225 Difference]: With dead ends: 29 [2022-07-12 03:07:48,316 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 03:07:48,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:07:48,317 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:07:48,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-07-12 03:07:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 03:07:48,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 03:07:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 03:07:48,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-07-12 03:07:48,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:07:48,318 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 03:07:48,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:07:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 03:07:48,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 03:07:48,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:07:48,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 03:07:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 03:07:48,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 03:07:49,056 INFO L899 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2022-07-12 03:07:49,056 INFO L899 garLoopResultBuilder]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2022-07-12 03:07:49,056 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 03:07:49,056 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 03:07:49,056 INFO L895 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: false [2022-07-12 03:07:49,056 INFO L899 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2022-07-12 03:07:49,056 INFO L899 garLoopResultBuilder]: For program point L111(lines 111 116) no Hoare annotation was computed. [2022-07-12 03:07:49,056 INFO L895 garLoopResultBuilder]: At program point L128(lines 119 129) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32)) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 8 24)) (= (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|)) (_ +zero 8 24)) |ULTIMATE.start_main_#t~short29#1| (= |ULTIMATE.start_atan_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_atan_float_~x#1| (_ +zero 8 24))) [2022-07-12 03:07:49,056 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L895 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 8 24)) |ULTIMATE.start_main_#t~short29#1| (= |ULTIMATE.start_atan_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_atan_float_~x#1| (_ +zero 8 24))) [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L81(lines 81 97) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 98) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 96) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L902 garLoopResultBuilder]: At program point L148(lines 131 149) the Hoare annotation is: true [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 88) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L115-2(line 115) no Hoare annotation was computed. [2022-07-12 03:07:49,057 INFO L895 garLoopResultBuilder]: At program point L115-3(lines 55 117) the Hoare annotation is: (and (= |ULTIMATE.start_atan_float_#res#1| (_ +zero 8 24)) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= |ULTIMATE.start_atan_float_~x#1| (_ +zero 8 24))) [2022-07-12 03:07:49,057 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 77) no Hoare annotation was computed. [2022-07-12 03:07:49,058 INFO L899 garLoopResultBuilder]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2022-07-12 03:07:49,058 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 67) no Hoare annotation was computed. [2022-07-12 03:07:49,058 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 03:07:49,058 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 76) no Hoare annotation was computed. [2022-07-12 03:07:49,058 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2022-07-12 03:07:49,058 INFO L895 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= |ULTIMATE.start_atan_float_~x#1| (_ +zero 8 24))) [2022-07-12 03:07:49,058 INFO L899 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2022-07-12 03:07:49,058 INFO L899 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2022-07-12 03:07:49,058 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2022-07-12 03:07:49,058 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 71) no Hoare annotation was computed. [2022-07-12 03:07:49,060 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:07:49,061 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:07:49,075 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-12 03:07:49,076 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-12 03:07:49,078 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-12 03:07:49,083 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-12 03:07:49,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:07:49 BoogieIcfgContainer [2022-07-12 03:07:49,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:07:49,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:07:49,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:07:49,091 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:07:49,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:06:14" (3/4) ... [2022-07-12 03:07:49,093 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 03:07:49,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-07-12 03:07:49,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-12 03:07:49,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 03:07:49,118 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 03:07:49,150 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result == ~Pluszero~LONGDOUBLE() && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~Pluszero~LONGDOUBLE() [2022-07-12 03:07:49,151 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() [2022-07-12 03:07:49,152 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((x == ~Pluszero~LONGDOUBLE() && \result == 0bv32) && res == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() [2022-07-12 03:07:49,191 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 03:07:49,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:07:49,192 INFO L158 Benchmark]: Toolchain (without parser) took 103671.35ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 31.0MB in the beginning and 32.0MB in the end (delta: -946.4kB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-07-12 03:07:49,192 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 54.5MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:07:49,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.24ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 30.9MB in the beginning and 57.2MB in the end (delta: -26.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-07-12 03:07:49,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.75ms. Allocated memory is still 77.6MB. Free memory was 57.2MB in the beginning and 54.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:07:49,194 INFO L158 Benchmark]: Boogie Preprocessor took 41.93ms. Allocated memory is still 77.6MB. Free memory was 54.6MB in the beginning and 52.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:07:49,194 INFO L158 Benchmark]: RCFGBuilder took 8548.21ms. Allocated memory is still 77.6MB. Free memory was 52.4MB in the beginning and 52.0MB in the end (delta: 416.4kB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-07-12 03:07:49,195 INFO L158 Benchmark]: TraceAbstraction took 94634.68ms. Allocated memory is still 77.6MB. Free memory was 51.3MB in the beginning and 36.2MB in the end (delta: 15.1MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-07-12 03:07:49,195 INFO L158 Benchmark]: Witness Printer took 107.01ms. Allocated memory is still 77.6MB. Free memory was 36.2MB in the beginning and 32.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 03:07:49,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 54.5MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.24ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 30.9MB in the beginning and 57.2MB in the end (delta: -26.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.75ms. Allocated memory is still 77.6MB. Free memory was 57.2MB in the beginning and 54.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.93ms. Allocated memory is still 77.6MB. Free memory was 54.6MB in the beginning and 52.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8548.21ms. Allocated memory is still 77.6MB. Free memory was 52.4MB in the beginning and 52.0MB in the end (delta: 416.4kB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * TraceAbstraction took 94634.68ms. Allocated memory is still 77.6MB. Free memory was 51.3MB in the beginning and 36.2MB in the end (delta: 15.1MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Witness Printer took 107.01ms. Allocated memory is still 77.6MB. Free memory was 36.2MB in the beginning and 32.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 144]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 94.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 80.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 78.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 668 SdHoareTripleChecker+Invalid, 76.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 28 IncrementalHoareTripleChecker+Unchecked, 453 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 215 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 88 HoareAnnotationTreeSize, 7 FomulaSimplifications, 82 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 6 QuantifiedInterpolants, 451 SizeOfPredicates, 40 NumberOfNonLiveVariables, 735 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((x == ~Pluszero~LONGDOUBLE() && \result == 0bv32) && res == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant [2022-07-12 03:07:49,209 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-12 03:07:49,210 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 55]: Loop Invariant [2022-07-12 03:07:49,232 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-07-12 03:07:49,235 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((\result == ~Pluszero~LONGDOUBLE() && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~Pluszero~LONGDOUBLE() RESULT: Ultimate proved your program to be correct! [2022-07-12 03:07:49,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE