/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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:46:24,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:46:24,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:46:24,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 04:46:24,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 04:46:24,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 04:46:24,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 04:46:24,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 04:46:24,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 04:46:24,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 04:46:24,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 04:46:24,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 04:46:24,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 04:46:24,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 04:46:24,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 04:46:24,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 04:46:24,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 04:46:24,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 04:46:24,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 04:46:24,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 04:46:24,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 04:46:24,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 04:46:24,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 04:46:24,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 04:46:24,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 04:46:24,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 04:46:24,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 04:46:24,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 04:46:24,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 04:46:24,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 04:46:24,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 04:46:24,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 04:46:24,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 04:46:24,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:46:24,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:46:24,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:46:24,344 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 04:46:24,368 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:46:24,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:46:24,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:46:24,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:46:24,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:46:24,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:46:24,369 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:46:24,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:46:24,369 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:46:24,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:46:24,370 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:46:24,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:46:24,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:46:24,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:46:24,370 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:46:24,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:46:24,370 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:46:24,371 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:46:24,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:46:24,371 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:46:24,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:46:24,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:46:24,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:46:24,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:46:24,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:46:24,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:46:24,372 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:46:24,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:46:24,372 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:46:24,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:46:24,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:46:24,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:46:24,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:46:24,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:46:24,373 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:46:24,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:46:24,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:46:24,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:46:24,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:46:24,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:46:24,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:46:24,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:46:24,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:46:24,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:46:24,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:46:24,595 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:46:24,596 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:46:24,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2023-04-01 04:46:26,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:46:26,287 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:46:26,301 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2023-04-01 04:46:26,306 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5b4828d/01d73f4b80b149909153e0f051ba5482/FLAGa7229e09c [2023-04-01 04:46:26,335 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5b4828d/01d73f4b80b149909153e0f051ba5482 [2023-04-01 04:46:26,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:46:26,338 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:46:26,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:46:26,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:46:26,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:46:26,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b466f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26, skipping insertion in model container [2023-04-01 04:46:26,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:46:26,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:46:26,671 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_1210.c[3091,3104] [2023-04-01 04:46:26,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:46:26,682 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:46:26,745 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_1210.c[3091,3104] [2023-04-01 04:46:26,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:46:26,769 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:46:26,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26 WrapperNode [2023-04-01 04:46:26,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:46:26,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:46:26,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:46:26,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:46:26,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:46:26,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:46:26,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:46:26,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:46:26,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (1/1) ... [2023-04-01 04:46:26,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:46:26,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:46:26,881 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 04:46:26,883 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 04:46:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:46:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:46:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:46:26,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2023-04-01 04:46:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2023-04-01 04:46:26,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:46:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:46:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:46:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-01 04:46:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:46:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:46:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:46:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:46:27,054 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:46:27,064 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:46:27,697 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:46:27,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:46:27,930 INFO L302 CfgBuilder]: Removed 20 assume(true) statements. [2023-04-01 04:46:27,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:46:27 BoogieIcfgContainer [2023-04-01 04:46:27,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:46:27,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:46:27,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:46:27,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:46:27,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:46:26" (1/3) ... [2023-04-01 04:46:27,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e03776e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:46:27, skipping insertion in model container [2023-04-01 04:46:27,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:46:26" (2/3) ... [2023-04-01 04:46:27,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e03776e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:46:27, skipping insertion in model container [2023-04-01 04:46:27,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:46:27" (3/3) ... [2023-04-01 04:46:27,955 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2023-04-01 04:46:27,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:46:27,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:46:28,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:46:28,053 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;@1be2432, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:46:28,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:46:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 46 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 04:46:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 04:46:28,070 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:46:28,070 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 04:46:28,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:46:28,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:46:28,077 INFO L85 PathProgramCache]: Analyzing trace with hash 241723967, now seen corresponding path program 1 times [2023-04-01 04:46:28,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:46:28,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755203721] [2023-04-01 04:46:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:46:28,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:46:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:46:28,331 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 04:46:28,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:46:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755203721] [2023-04-01 04:46:28,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755203721] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:46:28,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:46:28,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 04:46:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060596125] [2023-04-01 04:46:28,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:46:28,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 04:46:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:46:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 04:46:28,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:46:28,410 INFO L87 Difference]: Start difference. First operand has 56 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 46 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 04:46:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:46:28,485 INFO L93 Difference]: Finished difference Result 105 states and 159 transitions. [2023-04-01 04:46:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 04:46:28,487 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 23 [2023-04-01 04:46:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:46:28,493 INFO L225 Difference]: With dead ends: 105 [2023-04-01 04:46:28,493 INFO L226 Difference]: Without dead ends: 52 [2023-04-01 04:46:28,495 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 04:46:28,498 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:46:28,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:46:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-04-01 04:46:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-04-01 04:46:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 04:46:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2023-04-01 04:46:28,550 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2023-04-01 04:46:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:46:28,550 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2023-04-01 04:46:28,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 04:46:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2023-04-01 04:46:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-01 04:46:28,552 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:46:28,552 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, 1, 1] [2023-04-01 04:46:28,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:46:28,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:46:28,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:46:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 108724968, now seen corresponding path program 1 times [2023-04-01 04:46:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:46:28,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235345857] [2023-04-01 04:46:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:46:28,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:46:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:46:28,717 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 04:46:28,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:46:28,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235345857] [2023-04-01 04:46:28,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235345857] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:46:28,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:46:28,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 04:46:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892766535] [2023-04-01 04:46:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:46:28,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 04:46:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:46:28,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 04:46:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:46:28,721 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 04:46:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:46:28,764 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2023-04-01 04:46:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 04:46:28,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-04-01 04:46:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:46:28,767 INFO L225 Difference]: With dead ends: 55 [2023-04-01 04:46:28,767 INFO L226 Difference]: Without dead ends: 52 [2023-04-01 04:46:28,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:46:28,773 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:46:28,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:46:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-04-01 04:46:28,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-04-01 04:46:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 04:46:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2023-04-01 04:46:28,779 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 25 [2023-04-01 04:46:28,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:46:28,780 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2023-04-01 04:46:28,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 04:46:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2023-04-01 04:46:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-01 04:46:28,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:46:28,781 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 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 04:46:28,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 04:46:28,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:46:28,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:46:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1039519900, now seen corresponding path program 1 times [2023-04-01 04:46:28,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:46:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33552204] [2023-04-01 04:46:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:46:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:46:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 04:46:28,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 04:46:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 04:46:29,059 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 04:46:29,060 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 04:46:29,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 04:46:29,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 04:46:29,066 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-04-01 04:46:29,069 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 04:46:29,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 04:46:29 BoogieIcfgContainer [2023-04-01 04:46:29,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 04:46:29,107 INFO L158 Benchmark]: Toolchain (without parser) took 2769.55ms. Allocated memory is still 357.6MB. Free memory was 308.3MB in the beginning and 321.8MB in the end (delta: -13.6MB). Peak memory consumption was 106.5MB. Max. memory is 8.0GB. [2023-04-01 04:46:29,107 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 216.0MB. Free memory is still 166.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:46:29,108 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.68ms. Allocated memory is still 357.6MB. Free memory was 308.3MB in the beginning and 296.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 04:46:29,108 INFO L158 Benchmark]: Boogie Preprocessor took 77.74ms. Allocated memory is still 357.6MB. Free memory was 296.2MB in the beginning and 293.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-01 04:46:29,108 INFO L158 Benchmark]: RCFGBuilder took 1077.37ms. Allocated memory is still 357.6MB. Free memory was 293.6MB in the beginning and 255.9MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-04-01 04:46:29,108 INFO L158 Benchmark]: TraceAbstraction took 1156.39ms. Allocated memory is still 357.6MB. Free memory was 255.3MB in the beginning and 321.8MB in the end (delta: -66.5MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. [2023-04-01 04:46:29,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 216.0MB. Free memory is still 166.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 429.68ms. Allocated memory is still 357.6MB. Free memory was 308.3MB in the beginning and 296.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 77.74ms. Allocated memory is still 357.6MB. Free memory was 296.2MB in the beginning and 293.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1077.37ms. Allocated memory is still 357.6MB. Free memory was 293.6MB in the beginning and 255.9MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1156.39ms. Allocated memory is still 357.6MB. Free memory was 255.3MB in the beginning and 321.8MB in the end (delta: -66.5MB). Peak memory consumption was 54.1MB. 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: 124]: 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 118. Possible FailurePath: [L19] static const double one_modf = 1.0; [L118] double x = 0.0 / 0.0; [L119] double iptr; VAL [iptr={6:0}, one_modf=1] [L120] CALL, EXPR modf_double(x, &iptr) VAL [\old(x)=9, iptr={6:0}, one_modf=1] [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [\old(x)=9, iptr={6:0}, iptr={6:0}, one_modf=1, x=9] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=9, i0=-2146435072, i1=9, iptr={6:0}, iptr={6:0}, j0=-1022, one_modf=1, x=9] [L31] COND TRUE j0 < 20 VAL [\old(x)=9, i0=-2146435072, i1=9, iptr={6:0}, iptr={6:0}, j0=-1022, one_modf=1, x=9] [L32] COND TRUE j0 < 0 VAL [\old(x)=9, i0=-2146435072, i1=9, iptr={6:0}, iptr={6:0}, j0=-1022, one_modf=1, x=9] [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; VAL [\old(x)=9, \result=9, i0=-2146435072, i1=9, iptr={6:0}, iptr={6:0}, j0=-1022, one_modf=1, x=9] [L120] RET, EXPR modf_double(x, &iptr) VAL [iptr={6:0}, modf_double(x, &iptr)=9, one_modf=1, x=9] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) VAL [\read(iptr)=11, iptr={6:0}, one_modf=1, res=9, x=9] [L123] CALL, EXPR isnan_double(iptr) VAL [\old(x)=11, one_modf=1] [L17] return x != x; [L123] RET, EXPR isnan_double(iptr) VAL [\read(iptr)=11, iptr={6:0}, isnan_double(iptr)=1, one_modf=1, res=9, x=9] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=11, iptr={6:0}, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(iptr)=1, one_modf=1, res=9, x=9] [L123] CALL, EXPR isnan_double(res) VAL [\old(x)=9, one_modf=1] [L17] return x != x; [L123] RET, EXPR isnan_double(res) VAL [\read(iptr)=11, iptr={6:0}, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(iptr)=1, isnan_double(res)=0, one_modf=1, res=9, x=9] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=11, iptr={6:0}, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(iptr)=1, isnan_double(res)=0, one_modf=1, res=9, x=9] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L124] reach_error() VAL [iptr={6:0}, one_modf=1, res=9, x=9] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 155 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 108 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-04-01 04:46:29,150 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...