./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0921.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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_0921.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 e738debe116f53547f4d856a26a196b1ac73097502894c4fa34f78b8e888418f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:44:37,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:44:37,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:44:37,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:44:37,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:44:37,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:44:37,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:44:37,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:44:37,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:44:37,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:44:37,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:44:37,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:44:37,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:44:37,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:44:37,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:44:37,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:44:37,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:44:37,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:44:37,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:44:37,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:44:37,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:44:37,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:44:37,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:44:37,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:44:37,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:44:37,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:44:37,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:44:37,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:44:37,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:44:37,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:44:37,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:44:37,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:44:37,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:44:37,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:44:37,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:44:37,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:44:37,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:44:37,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:44:37,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:44:37,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:44:37,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:44:37,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:44:37,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:44:37,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:44:37,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:44:37,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:44:37,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:44:37,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:44:37,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:44:37,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:44:37,433 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:44:37,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:44:37,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:44:37,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:44:37,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:44:37,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:44:37,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:44:37,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:44:37,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:44:37,435 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:44:37,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:44:37,435 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:44:37,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:44:37,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:44:37,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:44:37,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:44:37,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:44:37,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:44:37,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:44:37,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:44:37,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:44:37,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:44:37,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:44:37,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:44:37,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:44:37,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e738debe116f53547f4d856a26a196b1ac73097502894c4fa34f78b8e888418f [2022-02-20 16:44:37,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:44:37,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:44:37,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:44:37,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:44:37,674 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:44:37,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2022-02-20 16:44:37,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33079651a/05f82d29948443d58b271e36a58cf757/FLAG6e3d51a7a [2022-02-20 16:44:38,080 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:44:38,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2022-02-20 16:44:38,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33079651a/05f82d29948443d58b271e36a58cf757/FLAG6e3d51a7a [2022-02-20 16:44:38,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33079651a/05f82d29948443d58b271e36a58cf757 [2022-02-20 16:44:38,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:44:38,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:44:38,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:44:38,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:44:38,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:44:38,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4623a019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38, skipping insertion in model container [2022-02-20 16:44:38,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:44:38,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:44:38,716 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_0921.c[3212,3225] [2022-02-20 16:44:38,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:44:38,726 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:44:38,752 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_0921.c[3212,3225] [2022-02-20 16:44:38,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:44:38,762 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:44:38,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38 WrapperNode [2022-02-20 16:44:38,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:44:38,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:44:38,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:44:38,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:44:38,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,807 INFO L137 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 152 [2022-02-20 16:44:38,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:44:38,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:44:38,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:44:38,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:44:38,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:44:38,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:44:38,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:44:38,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:44:38,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (1/1) ... [2022-02-20 16:44:38,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:44:38,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:44:38,863 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) [2022-02-20 16:44:38,872 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 [2022-02-20 16:44:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:44:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:44:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:44:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-20 16:44:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 16:44:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-20 16:44:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:44:38,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:44:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 16:44:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:44:38,943 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:44:38,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:44:39,218 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:44:39,223 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:44:39,224 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-02-20 16:44:39,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:39 BoogieIcfgContainer [2022-02-20 16:44:39,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:44:39,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:44:39,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:44:39,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:44:39,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:44:38" (1/3) ... [2022-02-20 16:44:39,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4474bf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:44:39, skipping insertion in model container [2022-02-20 16:44:39,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:38" (2/3) ... [2022-02-20 16:44:39,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4474bf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:44:39, skipping insertion in model container [2022-02-20 16:44:39,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:39" (3/3) ... [2022-02-20 16:44:39,231 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0921.c [2022-02-20 16:44:39,234 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:44:39,234 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:44:39,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:44:39,278 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:44:39,281 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:44:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.71875) internal successors, (55), 33 states have internal predecessors, (55), 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) [2022-02-20 16:44:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 16:44:39,297 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:44:39,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:44:39,298 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:44:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:44:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1903488144, now seen corresponding path program 1 times [2022-02-20 16:44:39,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:44:39,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48262582] [2022-02-20 16:44:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:44:39,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:44:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:44:39,462 INFO L290 TraceCheckUtils]: 0: Hoare triple {37#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(20, 2);call #Ultimate.allocInit(12, 3);~ln2_hi_log~0 := 0.69313812256;~ln2_lo_log~0 := 9.0580006145E-6;~two25_log~0 := 3.3554432E7;~Lg1_log~0 := 0.66666668653;~Lg2_log~0 := 0.40000000596;~Lg3_log~0 := 0.28571429849;~Lg4_log~0 := 0.22222198546;~Lg5_log~0 := 0.1818357259;~Lg6_log~0 := 0.15313838422;~Lg7_log~0 := 0.1479819864;~zero_log~0 := 0.0; {37#true} is VALID [2022-02-20 16:44:39,463 INFO L290 TraceCheckUtils]: 1: Hoare triple {37#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_#t~ret10#1, main_~x~0#1, main_~res~0#1;main_~x~0#1 := ~someBinaryArithmeticFLOAToperation(0.0, 0.0);assume { :begin_inline___ieee754_logf } true;__ieee754_logf_#in~x#1 := main_~x~0#1;havoc __ieee754_logf_#res#1;havoc __ieee754_logf_#t~mem5#1, __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset, __ieee754_logf_#t~mem6#1, __ieee754_logf_~#gf_u~2#1.base, __ieee754_logf_~#gf_u~2#1.offset, __ieee754_logf_#t~mem8#1, __ieee754_logf_~#sf_u~0#1.base, __ieee754_logf_~#sf_u~0#1.offset, __ieee754_logf_~x#1, __ieee754_logf_~hfsq~0#1, __ieee754_logf_~f~0#1, __ieee754_logf_~s~0#1, __ieee754_logf_~z~0#1, __ieee754_logf_~R~0#1, __ieee754_logf_~w~0#1, __ieee754_logf_~t1~0#1, __ieee754_logf_~t2~0#1, __ieee754_logf_~dk~0#1, __ieee754_logf_~k~0#1, __ieee754_logf_~ix~1#1, __ieee754_logf_~i~0#1, __ieee754_logf_~j~0#1, __ieee754_logf_#t~nondet7#1;__ieee754_logf_~x#1 := __ieee754_logf_#in~x#1;havoc __ieee754_logf_~hfsq~0#1;havoc __ieee754_logf_~f~0#1;havoc __ieee754_logf_~s~0#1;havoc __ieee754_logf_~z~0#1;havoc __ieee754_logf_~R~0#1;havoc __ieee754_logf_~w~0#1;havoc __ieee754_logf_~t1~0#1;havoc __ieee754_logf_~t2~0#1;havoc __ieee754_logf_~dk~0#1;havoc __ieee754_logf_~k~0#1;havoc __ieee754_logf_~ix~1#1;havoc __ieee754_logf_~i~0#1;havoc __ieee754_logf_~j~0#1; {37#true} is VALID [2022-02-20 16:44:39,464 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#true} assume !true; {38#false} is VALID [2022-02-20 16:44:39,464 INFO L290 TraceCheckUtils]: 3: Hoare triple {38#false} __ieee754_logf_~k~0#1 := 0; {38#false} is VALID [2022-02-20 16:44:39,464 INFO L290 TraceCheckUtils]: 4: Hoare triple {38#false} assume 0 == (if 0 == __ieee754_logf_~ix~1#1 then 0 else (if 1 == __ieee754_logf_~ix~1#1 then 1 else ~bitwiseAnd(__ieee754_logf_~ix~1#1, 2147483647)));__ieee754_logf_#res#1 := ~someBinaryArithmeticFLOAToperation(~someUnaryFLOAToperation(~two25_log~0), ~zero_log~0); {38#false} is VALID [2022-02-20 16:44:39,465 INFO L290 TraceCheckUtils]: 5: Hoare triple {38#false} main_#t~ret9#1 := __ieee754_logf_#res#1;assume { :end_inline___ieee754_logf } true;main_~res~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1;assume { :begin_inline_isnan_float } true;isnan_float_#in~x#1 := main_~res~0#1;havoc isnan_float_#res#1;havoc isnan_float_~x#1;isnan_float_~x#1 := isnan_float_#in~x#1;isnan_float_#res#1 := (if ~someBinaryFLOATComparisonOperation(isnan_float_~x#1, isnan_float_~x#1) then 1 else 0); {38#false} is VALID [2022-02-20 16:44:39,465 INFO L290 TraceCheckUtils]: 6: Hoare triple {38#false} main_#t~ret10#1 := isnan_float_#res#1;assume { :end_inline_isnan_float } true;assume -2147483648 <= main_#t~ret10#1 && main_#t~ret10#1 <= 2147483647; {38#false} is VALID [2022-02-20 16:44:39,465 INFO L290 TraceCheckUtils]: 7: Hoare triple {38#false} assume 0 == main_#t~ret10#1;havoc main_#t~ret10#1; {38#false} is VALID [2022-02-20 16:44:39,466 INFO L290 TraceCheckUtils]: 8: Hoare triple {38#false} assume !false; {38#false} is VALID [2022-02-20 16:44:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:44:39,467 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 16:44:39,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48262582] [2022-02-20 16:44:39,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48262582] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:44:39,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:44:39,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:44:39,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305213572] [2022-02-20 16:44:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:44:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 16:44:39,478 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:44:39,480 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:44:39,494 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:44:39,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:44:39,495 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 16:44:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:44:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:44:39,514 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.71875) internal successors, (55), 33 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:44:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:44:39,571 INFO L93 Difference]: Finished difference Result 66 states and 108 transitions. [2022-02-20 16:44:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:44:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 16:44:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:44:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:44:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions. [2022-02-20 16:44:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:44:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions. [2022-02-20 16:44:39,584 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 108 transitions. [2022-02-20 16:44:39,671 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 108 edges. 108 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:44:39,677 INFO L225 Difference]: With dead ends: 66 [2022-02-20 16:44:39,677 INFO L226 Difference]: Without dead ends: 31 [2022-02-20 16:44:39,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:44:39,681 INFO L933 BasicCegarLoop]: 46 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, 46 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 [2022-02-20 16:44:39,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:44:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-20 16:44:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-20 16:44:39,708 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:44:39,709 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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) [2022-02-20 16:44:39,710 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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) [2022-02-20 16:44:39,710 INFO L87 Difference]: Start difference. First operand 31 states. Second operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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) [2022-02-20 16:44:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:44:39,712 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2022-02-20 16:44:39,712 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2022-02-20 16:44:39,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:44:39,713 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:44:39,713 INFO L74 IsIncluded]: Start isIncluded. First operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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 31 states. [2022-02-20 16:44:39,713 INFO L87 Difference]: Start difference. First operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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 31 states. [2022-02-20 16:44:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:44:39,714 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2022-02-20 16:44:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2022-02-20 16:44:39,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:44:39,715 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:44:39,715 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:44:39,715 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:44:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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) [2022-02-20 16:44:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2022-02-20 16:44:39,718 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 9 [2022-02-20 16:44:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:44:39,718 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2022-02-20 16:44:39,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:44:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2022-02-20 16:44:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-20 16:44:39,719 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:44:39,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:44:39,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:44:39,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:44:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:44:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1484862669, now seen corresponding path program 1 times [2022-02-20 16:44:39,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:44:39,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792202571] [2022-02-20 16:44:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:44:39,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:44:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:44:39,753 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:44:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:44:39,787 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:44:39,787 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:44:39,788 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:44:39,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 16:44:39,791 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:44:39,793 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:44:39,811 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 16:44:39,811 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 16:44:39,811 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2022-02-20 16:44:39,811 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L38-1 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L38-1 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L45 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L45 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2022-02-20 16:44:39,812 WARN L170 areAnnotationChecker]: L113 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L125 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L125 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L126 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L126 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L130 has no Hoare annotation [2022-02-20 16:44:39,813 WARN L170 areAnnotationChecker]: L54-2 has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: L54-2 has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: L54-1 has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: L54-1 has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: L62 has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: L62 has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: L63-1 has no Hoare annotation [2022-02-20 16:44:39,814 WARN L170 areAnnotationChecker]: L63-1 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L62-2 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L62-2 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L63 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L63 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L63-2 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L62-4 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L62-4 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L70 has no Hoare annotation [2022-02-20 16:44:39,815 WARN L170 areAnnotationChecker]: L70 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L62-6 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L62-6 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L72 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L72 has no Hoare annotation [2022-02-20 16:44:39,816 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2022-02-20 16:44:39,817 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2022-02-20 16:44:39,817 WARN L170 areAnnotationChecker]: L99 has no Hoare annotation [2022-02-20 16:44:39,817 WARN L170 areAnnotationChecker]: L99 has no Hoare annotation [2022-02-20 16:44:39,817 WARN L170 areAnnotationChecker]: L105 has no Hoare annotation [2022-02-20 16:44:39,817 WARN L170 areAnnotationChecker]: L105 has no Hoare annotation [2022-02-20 16:44:39,817 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 16:44:39,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 04:44:39 BoogieIcfgContainer [2022-02-20 16:44:39,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 16:44:39,818 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 16:44:39,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 16:44:39,819 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 16:44:39,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:39" (3/4) ... [2022-02-20 16:44:39,821 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-20 16:44:39,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 16:44:39,823 INFO L158 Benchmark]: Toolchain (without parser) took 1300.63ms. Allocated memory is still 136.3MB. Free memory was 106.2MB in the beginning and 100.5MB in the end (delta: 5.7MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-02-20 16:44:39,823 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 90.2MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:44:39,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.26ms. Allocated memory is still 136.3MB. Free memory was 106.2MB in the beginning and 109.9MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:44:39,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.30ms. Allocated memory is still 136.3MB. Free memory was 109.9MB in the beginning and 106.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:44:39,824 INFO L158 Benchmark]: Boogie Preprocessor took 24.27ms. Allocated memory is still 136.3MB. Free memory was 106.9MB in the beginning and 105.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:44:39,825 INFO L158 Benchmark]: RCFGBuilder took 392.33ms. Allocated memory is still 136.3MB. Free memory was 105.3MB in the beginning and 88.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-02-20 16:44:39,825 INFO L158 Benchmark]: TraceAbstraction took 591.86ms. Allocated memory is still 136.3MB. Free memory was 87.3MB in the beginning and 101.3MB in the end (delta: -14.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:44:39,825 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 136.3MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:44:39,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 90.2MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.26ms. Allocated memory is still 136.3MB. Free memory was 106.2MB in the beginning and 109.9MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.30ms. Allocated memory is still 136.3MB. Free memory was 109.9MB in the beginning and 106.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.27ms. Allocated memory is still 136.3MB. Free memory was 106.9MB in the beginning and 105.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.33ms. Allocated memory is still 136.3MB. Free memory was 105.3MB in the beginning and 88.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 591.86ms. Allocated memory is still 136.3MB. Free memory was 87.3MB in the beginning and 101.3MB in the end (delta: -14.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 136.3MB. Free memory is still 100.5MB. 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: 126]: 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 113, overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 45. Possible FailurePath: [L26-L30] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L32] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L121] float x = 0.0f / 0.0f; [L122] CALL, EXPR __ieee754_logf(x) [L35] float hfsq, f, s, z, R, w, t1, t2, dk; [L36] __int32_t k, ix, i, j; VAL [\old(x)=4294967297, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967297, zero_log=0] [L39] ieee_float_shape_type gf_u; [L40] gf_u.value = (x) [L41] EXPR gf_u.word [L41] (ix) = gf_u.word [L44] k = 0 VAL [\old(x)=4294967297, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967297, zero_log=0] [L45] COND TRUE ((ix & 0x7fffffff) == 0) [L46] return -two25_log / zero_log; VAL [\old(x)=4294967297, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967297, zero_log=0] [L122] RET, EXPR __ieee754_logf(x) [L122] float res = __ieee754_logf(x); [L125] CALL, EXPR isnan_float(res) [L113] return x != x; VAL [\old(x)=4294967296, \result=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=4294967296, zero_log=0] [L125] RET, EXPR isnan_float(res) [L125] COND TRUE !isnan_float(res) [L126] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967296, two25_log=33554432, x=4294967297, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 46 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-20 16:44:39,860 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 -ea -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_0921.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 e738debe116f53547f4d856a26a196b1ac73097502894c4fa34f78b8e888418f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:44:41,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:44:41,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:44:41,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:44:41,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:44:41,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:44:41,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:44:41,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:44:41,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:44:41,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:44:41,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:44:41,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:44:41,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:44:41,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:44:41,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:44:41,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:44:41,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:44:41,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:44:41,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:44:41,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:44:41,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:44:41,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:44:41,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:44:41,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:44:41,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:44:41,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:44:41,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:44:41,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:44:41,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:44:41,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:44:41,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:44:41,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:44:41,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:44:41,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:44:41,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:44:41,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:44:41,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:44:41,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:44:41,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:44:41,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:44:41,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:44:41,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:44:41,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:44:41,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:44:41,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:44:41,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:44:41,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:44:41,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:44:41,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:44:41,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:44:41,702 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:44:41,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:44:41,703 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:44:41,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:44:41,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:44:41,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:44:41,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:44:41,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:44:41,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:44:41,704 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:44:41,704 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:44:41,705 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:44:41,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:44:41,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:44:41,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:44:41,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:44:41,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:44:41,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:44:41,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:44:41,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:44:41,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:44:41,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:44:41,706 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:44:41,706 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:44:41,707 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:44:41,707 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:44:41,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:44:41,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:44:41,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e738debe116f53547f4d856a26a196b1ac73097502894c4fa34f78b8e888418f [2022-02-20 16:44:42,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:44:42,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:44:42,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:44:42,053 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:44:42,053 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:44:42,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2022-02-20 16:44:42,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b33c4a34/f19e10b0245c47e890f43e8ab9b61ec6/FLAG9bab5f01f [2022-02-20 16:44:42,540 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:44:42,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2022-02-20 16:44:42,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b33c4a34/f19e10b0245c47e890f43e8ab9b61ec6/FLAG9bab5f01f [2022-02-20 16:44:42,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b33c4a34/f19e10b0245c47e890f43e8ab9b61ec6 [2022-02-20 16:44:42,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:44:42,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:44:42,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:44:42,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:44:42,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:44:42,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166ca2bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42, skipping insertion in model container [2022-02-20 16:44:42,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:44:42,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:44:42,757 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_0921.c[3212,3225] [2022-02-20 16:44:42,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:44:42,773 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:44:42,814 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_0921.c[3212,3225] [2022-02-20 16:44:42,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:44:42,835 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:44:42,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42 WrapperNode [2022-02-20 16:44:42,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:44:42,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:44:42,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:44:42,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:44:42,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,888 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 140 [2022-02-20 16:44:42,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:44:42,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:44:42,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:44:42,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:44:42,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:44:42,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:44:42,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:44:42,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:44:42,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (1/1) ... [2022-02-20 16:44:42,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:44:42,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:44:42,984 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) [2022-02-20 16:44:42,986 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 [2022-02-20 16:44:43,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:44:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:44:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:44:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-02-20 16:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-02-20 16:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:44:43,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-02-20 16:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-02-20 16:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:44:43,079 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:44:43,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:44:58,928 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:44:58,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:44:58,933 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-02-20 16:44:58,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:58 BoogieIcfgContainer [2022-02-20 16:44:58,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:44:58,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:44:58,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:44:58,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:44:58,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:44:42" (1/3) ... [2022-02-20 16:44:58,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398ddb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:44:58, skipping insertion in model container [2022-02-20 16:44:58,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:44:42" (2/3) ... [2022-02-20 16:44:58,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398ddb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:44:58, skipping insertion in model container [2022-02-20 16:44:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:44:58" (3/3) ... [2022-02-20 16:44:58,960 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0921.c [2022-02-20 16:44:58,964 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:44:58,964 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:44:59,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:44:59,019 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:44:59,019 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:44:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 29 states have internal predecessors, (47), 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) [2022-02-20 16:44:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 16:44:59,051 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:44:59,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:44:59,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:44:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:44:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1904103824, now seen corresponding path program 1 times [2022-02-20 16:44:59,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:44:59,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583180309] [2022-02-20 16:44:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:44:59,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:44:59,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:44:59,085 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) [2022-02-20 16:44:59,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:44:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:44:59,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 16:44:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:44:59,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:44:59,557 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(20bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32);~ln2_hi_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.69313812256));~ln2_lo_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 9.0580006145E-6));~two25_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 3.3554432E7));~Lg1_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.66666668653));~Lg2_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.40000000596));~Lg3_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.28571429849));~Lg4_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.22222198546));~Lg5_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.1818357259));~Lg6_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.15313838422));~Lg7_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.1479819864));~zero_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~Pluszero~DOUBLE()); {33#true} is VALID [2022-02-20 16:44:59,557 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_#t~ret9#1, main_~x~0#1, main_~res~0#1;main_~x~0#1 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());assume { :begin_inline___ieee754_logf } true;__ieee754_logf_#in~x#1 := main_~x~0#1;havoc __ieee754_logf_#res#1;havoc __ieee754_logf_#t~mem5#1, __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset, __ieee754_logf_#t~mem6#1, __ieee754_logf_~#gf_u~2#1.base, __ieee754_logf_~#gf_u~2#1.offset, __ieee754_logf_#t~mem7#1, __ieee754_logf_~#sf_u~0#1.base, __ieee754_logf_~#sf_u~0#1.offset, __ieee754_logf_~x#1, __ieee754_logf_~hfsq~0#1, __ieee754_logf_~f~0#1, __ieee754_logf_~s~0#1, __ieee754_logf_~z~0#1, __ieee754_logf_~R~0#1, __ieee754_logf_~w~0#1, __ieee754_logf_~t1~0#1, __ieee754_logf_~t2~0#1, __ieee754_logf_~dk~0#1, __ieee754_logf_~k~0#1, __ieee754_logf_~ix~1#1, __ieee754_logf_~i~0#1, __ieee754_logf_~j~0#1;__ieee754_logf_~x#1 := __ieee754_logf_#in~x#1;havoc __ieee754_logf_~hfsq~0#1;havoc __ieee754_logf_~f~0#1;havoc __ieee754_logf_~s~0#1;havoc __ieee754_logf_~z~0#1;havoc __ieee754_logf_~R~0#1;havoc __ieee754_logf_~w~0#1;havoc __ieee754_logf_~t1~0#1;havoc __ieee754_logf_~t2~0#1;havoc __ieee754_logf_~dk~0#1;havoc __ieee754_logf_~k~0#1;havoc __ieee754_logf_~ix~1#1;havoc __ieee754_logf_~i~0#1;havoc __ieee754_logf_~j~0#1; {33#true} is VALID [2022-02-20 16:44:59,558 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} assume !true; {34#false} is VALID [2022-02-20 16:44:59,568 INFO L290 TraceCheckUtils]: 3: Hoare triple {34#false} __ieee754_logf_~k~0#1 := 0bv32; {34#false} is VALID [2022-02-20 16:44:59,568 INFO L290 TraceCheckUtils]: 4: Hoare triple {34#false} assume 0bv32 == ~bvand32(2147483647bv32, __ieee754_logf_~ix~1#1);__ieee754_logf_#res#1 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~two25_log~0), ~zero_log~0); {34#false} is VALID [2022-02-20 16:44:59,568 INFO L290 TraceCheckUtils]: 5: Hoare triple {34#false} main_#t~ret8#1 := __ieee754_logf_#res#1;assume { :end_inline___ieee754_logf } true;main_~res~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_isnan_float } true;isnan_float_#in~x#1 := main_~res~0#1;havoc isnan_float_#res#1;havoc isnan_float_~x#1;isnan_float_~x#1 := isnan_float_#in~x#1;isnan_float_#res#1 := (if !~fp.eq~FLOAT(isnan_float_~x#1, isnan_float_~x#1) then 1bv32 else 0bv32); {34#false} is VALID [2022-02-20 16:44:59,568 INFO L290 TraceCheckUtils]: 6: Hoare triple {34#false} main_#t~ret9#1 := isnan_float_#res#1;assume { :end_inline_isnan_float } true; {34#false} is VALID [2022-02-20 16:44:59,569 INFO L290 TraceCheckUtils]: 7: Hoare triple {34#false} assume 0bv32 == main_#t~ret9#1;havoc main_#t~ret9#1; {34#false} is VALID [2022-02-20 16:44:59,569 INFO L290 TraceCheckUtils]: 8: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-02-20 16:44:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:44:59,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:44:59,570 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:44:59,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583180309] [2022-02-20 16:44:59,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583180309] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:44:59,571 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:44:59,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:44:59,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955321052] [2022-02-20 16:44:59,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:44:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 16:44:59,577 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:44:59,579 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:44:59,698 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:44:59,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:44:59,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:44:59,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:44:59,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:44:59,716 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:45:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:45:16,010 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2022-02-20 16:45:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:45:16,011 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 16:45:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:45:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:45:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2022-02-20 16:45:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:45:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2022-02-20 16:45:16,020 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 92 transitions. [2022-02-20 16:45:19,069 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 92 edges. 92 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:45:19,075 INFO L225 Difference]: With dead ends: 58 [2022-02-20 16:45:19,075 INFO L226 Difference]: Without dead ends: 27 [2022-02-20 16:45:19,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:45:19,081 INFO L933 BasicCegarLoop]: 40 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, 40 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 [2022-02-20 16:45:19,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:45:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-20 16:45:19,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-20 16:45:19,135 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:45:19,136 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2022-02-20 16:45:19,137 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2022-02-20 16:45:19,138 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2022-02-20 16:45:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:45:19,143 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-02-20 16:45:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-02-20 16:45:19,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:45:19,145 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:45:19,145 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 27 states. [2022-02-20 16:45:19,146 INFO L87 Difference]: Start difference. First operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 27 states. [2022-02-20 16:45:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:45:19,153 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-02-20 16:45:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-02-20 16:45:19,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:45:19,154 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:45:19,154 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:45:19,154 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:45:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2022-02-20 16:45:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-02-20 16:45:19,159 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 9 [2022-02-20 16:45:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:45:19,159 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-02-20 16:45:19,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:45:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-02-20 16:45:19,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-20 16:45:19,160 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:45:19,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:45:19,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 16:45:19,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:45:19,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:45:19,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:45:19,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1484246989, now seen corresponding path program 1 times [2022-02-20 16:45:19,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:45:19,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351330941] [2022-02-20 16:45:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:45:19,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:45:19,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:45:19,369 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) [2022-02-20 16:45:19,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 16:45:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:45:19,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-20 16:45:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:45:19,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:45:20,036 INFO L290 TraceCheckUtils]: 0: Hoare triple {217#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(20bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32);~ln2_hi_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.69313812256));~ln2_lo_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 9.0580006145E-6));~two25_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 3.3554432E7));~Lg1_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.66666668653));~Lg2_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.40000000596));~Lg3_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.28571429849));~Lg4_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.22222198546));~Lg5_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.1818357259));~Lg6_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.15313838422));~Lg7_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 0.1479819864));~zero_log~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~Pluszero~DOUBLE()); {217#true} is VALID [2022-02-20 16:45:20,038 INFO L290 TraceCheckUtils]: 1: Hoare triple {217#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_#t~ret9#1, main_~x~0#1, main_~res~0#1;main_~x~0#1 := ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~FLOAT(), ~Pluszero~FLOAT());assume { :begin_inline___ieee754_logf } true;__ieee754_logf_#in~x#1 := main_~x~0#1;havoc __ieee754_logf_#res#1;havoc __ieee754_logf_#t~mem5#1, __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset, __ieee754_logf_#t~mem6#1, __ieee754_logf_~#gf_u~2#1.base, __ieee754_logf_~#gf_u~2#1.offset, __ieee754_logf_#t~mem7#1, __ieee754_logf_~#sf_u~0#1.base, __ieee754_logf_~#sf_u~0#1.offset, __ieee754_logf_~x#1, __ieee754_logf_~hfsq~0#1, __ieee754_logf_~f~0#1, __ieee754_logf_~s~0#1, __ieee754_logf_~z~0#1, __ieee754_logf_~R~0#1, __ieee754_logf_~w~0#1, __ieee754_logf_~t1~0#1, __ieee754_logf_~t2~0#1, __ieee754_logf_~dk~0#1, __ieee754_logf_~k~0#1, __ieee754_logf_~ix~1#1, __ieee754_logf_~i~0#1, __ieee754_logf_~j~0#1;__ieee754_logf_~x#1 := __ieee754_logf_#in~x#1;havoc __ieee754_logf_~hfsq~0#1;havoc __ieee754_logf_~f~0#1;havoc __ieee754_logf_~s~0#1;havoc __ieee754_logf_~z~0#1;havoc __ieee754_logf_~R~0#1;havoc __ieee754_logf_~w~0#1;havoc __ieee754_logf_~t1~0#1;havoc __ieee754_logf_~t2~0#1;havoc __ieee754_logf_~dk~0#1;havoc __ieee754_logf_~k~0#1;havoc __ieee754_logf_~ix~1#1;havoc __ieee754_logf_~i~0#1;havoc __ieee754_logf_~j~0#1; {225#(exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_logf_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2022-02-20 16:45:20,044 INFO L290 TraceCheckUtils]: 2: Hoare triple {225#(exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_logf_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} call __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(__ieee754_logf_~x#1, __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset, 4bv32);call __ieee754_logf_#t~mem5#1 := read~intINTTYPE4(__ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset, 4bv32);__ieee754_logf_~ix~1#1 := __ieee754_logf_#t~mem5#1;havoc __ieee754_logf_#t~mem5#1;call ULTIMATE.dealloc(__ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset);havoc __ieee754_logf_~#gf_u~1#1.base, __ieee754_logf_~#gf_u~1#1.offset; {229#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~1#1|)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2022-02-20 16:45:20,045 INFO L290 TraceCheckUtils]: 3: Hoare triple {229#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~1#1|)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} goto; {229#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~1#1|)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2022-02-20 16:45:20,046 INFO L290 TraceCheckUtils]: 4: Hoare triple {229#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~1#1|)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} __ieee754_logf_~k~0#1 := 0bv32; {229#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~1#1|)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} is VALID [2022-02-20 16:45:20,166 INFO L290 TraceCheckUtils]: 5: Hoare triple {229#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 30 23) |ULTIMATE.start___ieee754_logf_~ix~1#1|) ((_ extract 22 0) |ULTIMATE.start___ieee754_logf_~ix~1#1|)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))} assume 0bv32 == ~bvand32(2147483647bv32, __ieee754_logf_~ix~1#1);__ieee754_logf_#res#1 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~two25_log~0), ~zero_log~0); {218#false} is VALID [2022-02-20 16:45:20,167 INFO L290 TraceCheckUtils]: 6: Hoare triple {218#false} main_#t~ret8#1 := __ieee754_logf_#res#1;assume { :end_inline___ieee754_logf } true;main_~res~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_isnan_float } true;isnan_float_#in~x#1 := main_~res~0#1;havoc isnan_float_#res#1;havoc isnan_float_~x#1;isnan_float_~x#1 := isnan_float_#in~x#1;isnan_float_#res#1 := (if !~fp.eq~FLOAT(isnan_float_~x#1, isnan_float_~x#1) then 1bv32 else 0bv32); {218#false} is VALID [2022-02-20 16:45:20,167 INFO L290 TraceCheckUtils]: 7: Hoare triple {218#false} main_#t~ret9#1 := isnan_float_#res#1;assume { :end_inline_isnan_float } true; {218#false} is VALID [2022-02-20 16:45:20,167 INFO L290 TraceCheckUtils]: 8: Hoare triple {218#false} assume 0bv32 == main_#t~ret9#1;havoc main_#t~ret9#1; {218#false} is VALID [2022-02-20 16:45:20,167 INFO L290 TraceCheckUtils]: 9: Hoare triple {218#false} assume !false; {218#false} is VALID [2022-02-20 16:45:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:45:20,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:45:20,167 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:45:20,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351330941] [2022-02-20 16:45:20,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351330941] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:45:20,168 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:45:20,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-20 16:45:20,168 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207276781] [2022-02-20 16:45:20,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:45:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2022-02-20 16:45:20,169 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:45:20,169 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-02-20 16:45:20,338 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:45:20,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-20 16:45:20,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:45:20,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-20 16:45:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-20 16:45:20,339 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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)