/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:05:39,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:05:39,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:05:39,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:05:39,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:05:39,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:05:39,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:05:39,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:05:39,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:05:39,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:05:39,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:05:39,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:05:39,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:05:39,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:05:39,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:05:39,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:05:39,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:05:39,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:05:39,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:05:39,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:05:39,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:05:39,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:05:39,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:05:39,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:05:39,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:05:39,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:05:39,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:05:39,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:05:39,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:05:39,995 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:05:39,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:05:39,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:05:39,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:05:39,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:05:39,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:05:39,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:05:39,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:05:39,996 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:05:39,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:05:39,996 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:05:39,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:05:39,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:05:39,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:05:39,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:05:39,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:05:39,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:05:39,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:05:39,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:05:39,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:05:39,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:05:39,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:05:39,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:05:39,999 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:05:39,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:05:39,999 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:05:39,999 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:05:40,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:05:40,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:05:40,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:05:40,233 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:05:40,233 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:05:40,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2023-03-31 00:05:41,325 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:05:41,476 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:05:41,477 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011a.c [2023-03-31 00:05:41,481 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b7c24ab/0f5083d5f5c94f33aa40b22dae3defaf/FLAGb0cef6121 [2023-03-31 00:05:41,495 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b7c24ab/0f5083d5f5c94f33aa40b22dae3defaf [2023-03-31 00:05:41,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:05:41,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:05:41,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:05:41,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:05:41,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:05:41,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5697dea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41, skipping insertion in model container [2023-03-31 00:05:41,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:05:41,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:05:41,646 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_1011a.c[1145,1158] [2023-03-31 00:05:41,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:05:41,660 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:05:41,679 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_1011a.c[1145,1158] [2023-03-31 00:05:41,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:05:41,691 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:05:41,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41 WrapperNode [2023-03-31 00:05:41,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:05:41,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:05:41,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:05:41,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:05:41,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,730 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:05:41,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:05:41,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:05:41,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:05:41,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (1/1) ... [2023-03-31 00:05:41,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:05:41,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:05:41,760 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) [2023-03-31 00:05:41,769 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 [2023-03-31 00:05:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:05:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:05:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:05:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2023-03-31 00:05:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2023-03-31 00:05:41,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:05:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:05:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:05:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:05:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:05:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-03-31 00:05:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:05:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:05:41,873 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:05:41,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:05:42,038 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:05:42,042 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:05:42,042 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-03-31 00:05:42,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:05:42 BoogieIcfgContainer [2023-03-31 00:05:42,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:05:42,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:05:42,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:05:42,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:05:42,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:05:41" (1/3) ... [2023-03-31 00:05:42,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2dae33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:05:42, skipping insertion in model container [2023-03-31 00:05:42,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:41" (2/3) ... [2023-03-31 00:05:42,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2dae33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:05:42, skipping insertion in model container [2023-03-31 00:05:42,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:05:42" (3/3) ... [2023-03-31 00:05:42,050 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2023-03-31 00:05:42,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:05:42,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:05:42,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:05:42,114 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61626bda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:05:42,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:05:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 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) [2023-03-31 00:05:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 00:05:42,124 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:42,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:05:42,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:42,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:42,129 INFO L85 PathProgramCache]: Analyzing trace with hash -935719056, now seen corresponding path program 1 times [2023-03-31 00:05:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:42,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176676058] [2023-03-31 00:05:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:42,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:42,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:05:42,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:42,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176676058] [2023-03-31 00:05:42,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176676058] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:42,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:42,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:05:42,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992550275] [2023-03-31 00:05:42,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:42,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:05:42,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:05:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:05:42,312 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 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 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:05:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:05:42,459 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2023-03-31 00:05:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:05:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-03-31 00:05:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:05:42,466 INFO L225 Difference]: With dead ends: 56 [2023-03-31 00:05:42,466 INFO L226 Difference]: Without dead ends: 28 [2023-03-31 00:05:42,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:05:42,473 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:05:42,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 7 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:05:42,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-03-31 00:05:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-03-31 00:05:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2023-03-31 00:05:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-03-31 00:05:42,515 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2023-03-31 00:05:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:05:42,516 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-03-31 00:05:42,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:05:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-03-31 00:05:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 00:05:42,517 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:42,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:05:42,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:05:42,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:42,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2087877165, now seen corresponding path program 1 times [2023-03-31 00:05:42,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:42,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993751506] [2023-03-31 00:05:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:42,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:05:42,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:05:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:05:42,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:05:42,635 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:05:42,636 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:05:42,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:05:42,640 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 00:05:42,642 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:05:42,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:05:42 BoogieIcfgContainer [2023-03-31 00:05:42,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:05:42,663 INFO L158 Benchmark]: Toolchain (without parser) took 1165.69ms. Allocated memory is still 442.5MB. Free memory was 403.0MB in the beginning and 406.7MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:05:42,664 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 221.2MB. Free memory is still 173.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:05:42,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.85ms. Allocated memory is still 442.5MB. Free memory was 402.7MB in the beginning and 392.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:05:42,665 INFO L158 Benchmark]: Boogie Preprocessor took 43.13ms. Allocated memory is still 442.5MB. Free memory was 392.3MB in the beginning and 390.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 00:05:42,666 INFO L158 Benchmark]: RCFGBuilder took 307.75ms. Allocated memory is still 442.5MB. Free memory was 390.6MB in the beginning and 378.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-03-31 00:05:42,666 INFO L158 Benchmark]: TraceAbstraction took 617.83ms. Allocated memory is still 442.5MB. Free memory was 377.6MB in the beginning and 406.7MB in the end (delta: -29.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:05:42,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 221.2MB. Free memory is still 173.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.85ms. Allocated memory is still 442.5MB. Free memory was 402.7MB in the beginning and 392.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.13ms. Allocated memory is still 442.5MB. Free memory was 392.3MB in the beginning and 390.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 307.75ms. Allocated memory is still 442.5MB. Free memory was 390.6MB in the beginning and 378.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 617.83ms. Allocated memory is still 442.5MB. Free memory was 377.6MB in the beginning and 406.7MB in the end (delta: -29.1MB). 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: 52]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 51. Possible FailurePath: [L47] float x = 0.0f; VAL [x=0] [L48] CALL, EXPR fabs_float(x) VAL [\old(x)=0] [L15] __uint32_t ix; VAL [\old(x)=0, x=0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; VAL [\old(x)=0, \result=60, ix=7, x=60] [L48] RET, EXPR fabs_float(x) VAL [fabs_float(x)=60, x=0] [L48] float res = fabs_float(x); [L51] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res == 0.0f && __signbit_float(res) == 0=0, res=60, x=0] [L51] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L52] reach_error() VAL [res=60, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 5 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 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 [2023-03-31 00:05:42,687 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...