/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 10:50:35,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 10:50:35,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 10:50:35,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 10:50:35,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 10:50:35,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 10:50:35,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 10:50:35,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 10:50:35,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 10:50:35,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 10:50:35,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 10:50:35,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 10:50:35,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 10:50:35,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 10:50:35,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 10:50:35,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 10:50:35,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 10:50:35,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 10:50:35,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 10:50:35,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 10:50:35,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 10:50:35,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 10:50:35,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 10:50:35,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 10:50:35,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 10:50:35,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 10:50:35,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 10:50:35,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 10:50:35,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 10:50:35,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 10:50:35,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 10:50:35,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 10:50:35,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 10:50:35,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 10:50:35,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 10:50:35,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 10:50:35,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 10:50:35,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 10:50:35,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 10:50:35,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 10:50:35,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 10:50:35,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 10:50:35,247 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 10:50:35,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 10:50:35,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 10:50:35,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 10:50:35,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 10:50:35,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 10:50:35,249 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 10:50:35,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 10:50:35,249 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 10:50:35,249 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 10:50:35,249 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 10:50:35,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 10:50:35,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 10:50:35,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 10:50:35,250 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 10:50:35,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 10:50:35,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 10:50:35,250 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 10:50:35,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 10:50:35,251 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 10:50:35,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 10:50:35,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 10:50:35,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 10:50:35,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 10:50:35,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 10:50:35,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 10:50:35,253 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 10:50:35,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 10:50:35,253 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 10:50:35,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 10:50:35,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 10:50:35,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 10:50:35,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:50:35,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 10:50:35,254 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 10:50:35,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 10:50:35,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 10:50:35,254 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 10:50:35,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 10:50:35,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 10:50:35,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 10:50:35,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 10:50:35,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 10:50:35,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 10:50:35,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 10:50:35,519 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 10:50:35,520 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 10:50:35,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c [2023-04-01 10:50:36,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 10:50:36,930 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 10:50:36,931 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c [2023-04-01 10:50:36,936 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1136f204b/4f1afb77817944af8b807de8b1a201fd/FLAG9a891be54 [2023-04-01 10:50:36,949 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1136f204b/4f1afb77817944af8b807de8b1a201fd [2023-04-01 10:50:36,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 10:50:36,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 10:50:36,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 10:50:36,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 10:50:36,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 10:50:36,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:50:36" (1/1) ... [2023-04-01 10:50:36,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df3b7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:36, skipping insertion in model container [2023-04-01 10:50:36,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:50:36" (1/1) ... [2023-04-01 10:50:36,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 10:50:36,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 10:50:37,141 WARN L247 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_1012b.c[1158,1171] [2023-04-01 10:50:37,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:50:37,155 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 10:50:37,175 WARN L247 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_1012b.c[1158,1171] [2023-04-01 10:50:37,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:50:37,188 INFO L208 MainTranslator]: Completed translation [2023-04-01 10:50:37,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37 WrapperNode [2023-04-01 10:50:37,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 10:50:37,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 10:50:37,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 10:50:37,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 10:50:37,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 10:50:37,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 10:50:37,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 10:50:37,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 10:50:37,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (1/1) ... [2023-04-01 10:50:37,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:50:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:50:37,249 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) [2023-04-01 10:50:37,258 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 [2023-04-01 10:50:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 10:50:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 10:50:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 10:50:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2023-04-01 10:50:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2023-04-01 10:50:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 10:50:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 10:50:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 10:50:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-01 10:50:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2023-04-01 10:50:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 10:50:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 10:50:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 10:50:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 10:50:37,389 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 10:50:37,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 10:50:37,625 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 10:50:37,651 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 10:50:37,651 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-04-01 10:50:37,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:50:37 BoogieIcfgContainer [2023-04-01 10:50:37,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 10:50:37,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 10:50:37,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 10:50:37,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 10:50:37,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:50:36" (1/3) ... [2023-04-01 10:50:37,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f264ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:50:37, skipping insertion in model container [2023-04-01 10:50:37,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:50:37" (2/3) ... [2023-04-01 10:50:37,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f264ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:50:37, skipping insertion in model container [2023-04-01 10:50:37,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:50:37" (3/3) ... [2023-04-01 10:50:37,664 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2023-04-01 10:50:37,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 10:50:37,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 10:50:37,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 10:50:37,739 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@418a195b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 10:50:37,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 10:50:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 10:50:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 10:50:37,750 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:50:37,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:50:37,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:50:37,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:50:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2003565450, now seen corresponding path program 1 times [2023-04-01 10:50:37,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:50:37,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684877829] [2023-04-01 10:50:37,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:50:37,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:50:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:50:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:50:37,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:50:37,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684877829] [2023-04-01 10:50:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684877829] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:50:37,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:50:37,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 10:50:37,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73832388] [2023-04-01 10:50:37,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:50:37,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 10:50:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:50:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 10:50:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 10:50:38,006 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:50:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:50:38,048 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2023-04-01 10:50:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 10:50:38,051 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-04-01 10:50:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:50:38,057 INFO L225 Difference]: With dead ends: 49 [2023-04-01 10:50:38,057 INFO L226 Difference]: Without dead ends: 24 [2023-04-01 10:50:38,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 10:50:38,066 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 10:50:38,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 10:50:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-04-01 10:50:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-04-01 10:50:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 10:50:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2023-04-01 10:50:38,104 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 20 [2023-04-01 10:50:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:50:38,106 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2023-04-01 10:50:38,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 10:50:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2023-04-01 10:50:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 10:50:38,109 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:50:38,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:50:38,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 10:50:38,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:50:38,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:50:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1195023564, now seen corresponding path program 1 times [2023-04-01 10:50:38,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:50:38,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374494191] [2023-04-01 10:50:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:50:38,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:50:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:50:38,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 10:50:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:50:38,237 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 10:50:38,237 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 10:50:38,239 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 10:50:38,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 10:50:38,243 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 10:50:38,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 10:50:38,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 10:50:38 BoogieIcfgContainer [2023-04-01 10:50:38,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 10:50:38,273 INFO L158 Benchmark]: Toolchain (without parser) took 1319.71ms. Allocated memory is still 254.8MB. Free memory was 203.4MB in the beginning and 204.9MB in the end (delta: -1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 10:50:38,273 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory was 139.4MB in the beginning and 139.2MB in the end (delta: 180.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 10:50:38,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.51ms. Allocated memory is still 254.8MB. Free memory was 203.0MB in the beginning and 192.8MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-01 10:50:38,277 INFO L158 Benchmark]: Boogie Preprocessor took 30.64ms. Allocated memory is still 254.8MB. Free memory was 192.8MB in the beginning and 191.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 10:50:38,277 INFO L158 Benchmark]: RCFGBuilder took 434.01ms. Allocated memory is still 254.8MB. Free memory was 190.8MB in the beginning and 178.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-01 10:50:38,279 INFO L158 Benchmark]: TraceAbstraction took 613.59ms. Allocated memory is still 254.8MB. Free memory was 177.5MB in the beginning and 204.9MB in the end (delta: -27.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 10:50:38,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory was 139.4MB in the beginning and 139.2MB in the end (delta: 180.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 233.51ms. Allocated memory is still 254.8MB. Free memory was 203.0MB in the beginning and 192.8MB in the end (delta: 10.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.64ms. Allocated memory is still 254.8MB. Free memory was 192.8MB in the beginning and 191.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 434.01ms. Allocated memory is still 254.8MB. Free memory was 190.8MB in the beginning and 178.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 613.59ms. Allocated memory is still 254.8MB. Free memory was 177.5MB in the beginning and 204.9MB in the end (delta: -27.4MB). There was no memory consumed. Max. memory is 8.0GB. * 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: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 48. Possible FailurePath: [L48] float x = -1.0f / 0.0f; [L49] CALL, EXPR fabs_float(x) VAL [\old(x)=2147483663] [L14] __uint32_t ix; VAL [\old(x)=2147483663, x=2147483663] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (ix) = gf_u.word [L21] ieee_float_shape_type sf_u; [L22] sf_u.word = (ix & 0x7fffffff) [L23] EXPR sf_u.value [L23] (x) = sf_u.value [L25] return x; [L49] RET, EXPR fabs_float(x) VAL [fabs_float(x)=2147483664, x=2147483663] [L49] float res = fabs_float(x); [L52] CALL, EXPR isinf_float(res) VAL [\old(x)=2147483664] [L30] __int32_t ix; VAL [\old(x)=2147483664, x=2147483664] [L32] ieee_float_shape_type gf_u; [L33] gf_u.value = (x) [L34] EXPR gf_u.word [L34] (ix) = gf_u.word [L36] ix &= 0x7fffffff [L37] return ((ix) == 0x7f800000L); [L52] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=2147483664, x=2147483663] [L52] COND TRUE !isinf_float(res) [L53] reach_error() VAL [res=2147483664, x=2147483663] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 3 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=28occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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 [2023-04-01 10:50:38,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...