/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 OctagonDomain -i ../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:23:37,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:23:37,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:23:37,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:23:37,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:23:37,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:23:37,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:23:37,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:23:37,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:23:37,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:23:37,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:23:37,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:23:37,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:23:37,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:23:37,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:23:37,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:23:37,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:23:37,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:23:37,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:23:37,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:23:37,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:23:37,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:23:37,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:23:37,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:23:37,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 21:23:37,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:23:37,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:23:37,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:23:37,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:23:37,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:23:37,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:23:37,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:23:37,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:23:37,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:23:37,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:23:37,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:23:37,077 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 [2023-04-02 21:23:37,105 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:23:37,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:23:37,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:23:37,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:23:37,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:23:37,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:23:37,107 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:23:37,107 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:23:37,107 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:23:37,107 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:23:37,108 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:23:37,108 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:23:37,108 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:23:37,108 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:23:37,108 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:23:37,108 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:23:37,108 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:23:37,108 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:23:37,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:23:37,109 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:23:37,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:23:37,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:23:37,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:23:37,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:23:37,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:23:37,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:23:37,110 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:23:37,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:23:37,111 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:23:37,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:23:37,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:23:37,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:23:37,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:23:37,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:23:37,112 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:23:37,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:23:37,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:23:37,112 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:23:37,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:23:37,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:23:37,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:23:37,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:23:37,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:23:37,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:23:37,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:23:37,364 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:23:37,365 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:23:37,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2023-04-02 21:23:38,547 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:23:38,733 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:23:38,734 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2023-04-02 21:23:38,740 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76641df66/6ae3ace576ed4d619d33cdd12417aae9/FLAG2b29af800 [2023-04-02 21:23:38,755 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76641df66/6ae3ace576ed4d619d33cdd12417aae9 [2023-04-02 21:23:38,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:23:38,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:23:38,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:23:38,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:23:38,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:23:38,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:38,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5d7517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38, skipping insertion in model container [2023-04-02 21:23:38,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:38,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:23:38,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:23:38,924 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/double_req_bl_1031.c[2057,2070] [2023-04-02 21:23:38,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:23:38,934 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:23:38,956 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/double_req_bl_1031.c[2057,2070] [2023-04-02 21:23:38,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:23:38,968 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:23:38,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38 WrapperNode [2023-04-02 21:23:38,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:23:38,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:23:38,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:23:38,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:23:38,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:38,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:38,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:38,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:39,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:39,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:39,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:39,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:39,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:23:39,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:23:39,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:23:39,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:23:39,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (1/1) ... [2023-04-02 21:23:39,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:23:39,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:23:39,052 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) [2023-04-02 21:23:39,056 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 [2023-04-02 21:23:39,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:23:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:23:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:23:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2023-04-02 21:23:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2023-04-02 21:23:39,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:23:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:23:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:23:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:23:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:23:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2023-04-02 21:23:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2023-04-02 21:23:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:23:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:23:39,197 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:23:39,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:23:39,571 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:23:39,801 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:23:39,801 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-02 21:23:39,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:23:39 BoogieIcfgContainer [2023-04-02 21:23:39,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:23:39,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:23:39,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:23:39,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:23:39,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:23:38" (1/3) ... [2023-04-02 21:23:39,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58efc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:23:39, skipping insertion in model container [2023-04-02 21:23:39,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:23:38" (2/3) ... [2023-04-02 21:23:39,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58efc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:23:39, skipping insertion in model container [2023-04-02 21:23:39,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:23:39" (3/3) ... [2023-04-02 21:23:39,812 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2023-04-02 21:23:39,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:23:39,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:23:39,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:23:39,870 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;@5ef74d5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:23:39,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:23:39,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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) [2023-04-02 21:23:39,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-02 21:23:39,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:23:39,879 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] [2023-04-02 21:23:39,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:23:39,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:23:39,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1747233349, now seen corresponding path program 1 times [2023-04-02 21:23:39,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:23:39,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935372630] [2023-04-02 21:23:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:23:39,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:23:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:23:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:23:40,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:23:40,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935372630] [2023-04-02 21:23:40,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935372630] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:23:40,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:23:40,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 21:23:40,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667963656] [2023-04-02 21:23:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:23:40,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 21:23:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:23:40,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 21:23:40,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 21:23:40,099 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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) [2023-04-02 21:23:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:23:40,142 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2023-04-02 21:23:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 21:23:40,144 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 [2023-04-02 21:23:40,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:23:40,151 INFO L225 Difference]: With dead ends: 57 [2023-04-02 21:23:40,151 INFO L226 Difference]: Without dead ends: 28 [2023-04-02 21:23:40,153 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 [2023-04-02 21:23:40,156 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:23:40,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:23:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-02 21:23:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-04-02 21:23:40,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2023-04-02 21:23:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-04-02 21:23:40,185 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2023-04-02 21:23:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:23:40,185 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-04-02 21:23:40,185 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) [2023-04-02 21:23:40,186 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-04-02 21:23:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 21:23:40,186 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:23:40,186 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] [2023-04-02 21:23:40,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:23:40,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:23:40,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:23:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1842660366, now seen corresponding path program 1 times [2023-04-02 21:23:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:23:40,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601442755] [2023-04-02 21:23:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:23:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:23:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:23:40,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 21:23:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:23:40,331 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 21:23:40,331 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 21:23:40,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 21:23:40,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:23:40,337 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-02 21:23:40,339 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:23:40,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:23:40 BoogieIcfgContainer [2023-04-02 21:23:40,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:23:40,355 INFO L158 Benchmark]: Toolchain (without parser) took 1596.91ms. Allocated memory is still 290.5MB. Free memory was 245.2MB in the beginning and 227.3MB in the end (delta: 17.8MB). Peak memory consumption was 18.7MB. Max. memory is 8.0GB. [2023-04-02 21:23:40,356 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory was 145.1MB in the beginning and 144.9MB in the end (delta: 178.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:23:40,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.93ms. Allocated memory is still 290.5MB. Free memory was 245.2MB in the beginning and 234.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 21:23:40,357 INFO L158 Benchmark]: Boogie Preprocessor took 45.60ms. Allocated memory is still 290.5MB. Free memory was 234.0MB in the beginning and 232.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 21:23:40,357 INFO L158 Benchmark]: RCFGBuilder took 788.56ms. Allocated memory is still 290.5MB. Free memory was 231.9MB in the beginning and 257.2MB in the end (delta: -25.3MB). Peak memory consumption was 41.8MB. Max. memory is 8.0GB. [2023-04-02 21:23:40,357 INFO L158 Benchmark]: TraceAbstraction took 548.05ms. Allocated memory is still 290.5MB. Free memory was 256.7MB in the beginning and 227.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-04-02 21:23:40,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory was 145.1MB in the beginning and 144.9MB in the end (delta: 178.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.93ms. Allocated memory is still 290.5MB. Free memory was 245.2MB in the beginning and 234.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.60ms. Allocated memory is still 290.5MB. Free memory was 234.0MB in the beginning and 232.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 788.56ms. Allocated memory is still 290.5MB. Free memory was 231.9MB in the beginning and 257.2MB in the end (delta: -25.3MB). Peak memory consumption was 41.8MB. Max. memory is 8.0GB. * TraceAbstraction took 548.05ms. Allocated memory is still 290.5MB. Free memory was 256.7MB in the beginning and 227.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. 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: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L77] CALL, EXPR round_double(x) VAL [\old(x)=3275751433] [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; VAL [\old(x)=3275751433, x=3275751433] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] EXPR msw & 0x7ff00000 [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=3275751433, exponent_less_1023=52, lsw=3275751426, msw=-1019215873, x=3275751433] [L43] COND TRUE exponent_less_1023 > 51 [L44] COND FALSE !(exponent_less_1023 == 1024) [L47] return x; VAL [\old(x)=3275751433, \result=3275751433, exponent_less_1023=52, lsw=3275751426, msw=-1019215873, x=3275751433] [L77] RET, EXPR round_double(x) VAL [round_double(x)=3275751433, x=3275751433] [L77] double res = round_double(x); [L80] CALL, EXPR isnan_double(res) VAL [\old(x)=3275751433] [L17] return x != x; [L80] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=3275751433, x=3275751433] [L80] COND TRUE !isnan_double(res) [L81] reach_error() VAL [res=3275751433, x=3275751433] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 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, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 27 mSDtfsCounter, 9 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=32occurred 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, 41 NumberOfCodeBlocks, 41 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 [2023-04-02 21:23:40,380 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...