/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_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:05:48,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:05:48,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:05:48,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:05:48,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:05:48,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:05:48,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:05:48,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:05:48,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:05:48,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:05:48,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:05:48,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:05:48,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:05:48,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:05:48,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:05:48,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:05:48,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:05:48,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:05:48,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:05:48,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:05:48,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:05:48,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:05:48,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:05:48,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:05:48,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:05:48,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:05:48,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:05:48,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:05:48,280 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 00:05:48,305 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:05:48,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:05:48,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:05:48,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:05:48,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:05:48,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:05:48,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:05:48,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:05:48,308 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:05:48,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:05:48,309 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:05:48,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:05:48,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:05:48,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:05:48,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:05:48,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:05:48,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:05:48,310 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:05:48,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:05:48,310 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:05:48,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:05:48,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:05:48,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:05:48,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:05:48,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:05:48,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:05:48,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:05:48,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:05:48,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:05:48,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:05:48,311 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:05:48,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:05:48,311 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:05:48,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:05:48,312 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:05:48,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:05:48,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:05:48,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:05:48,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:05:48,539 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:05:48,540 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:05:48,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2023-03-31 00:05:49,697 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:05:49,855 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:05:49,855 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2023-03-31 00:05:49,860 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6659d289/51074e2d374a4c2ab9a06d55712ac873/FLAG7b47b8553 [2023-03-31 00:05:49,871 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6659d289/51074e2d374a4c2ab9a06d55712ac873 [2023-03-31 00:05:49,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:05:49,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:05:49,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:05:49,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:05:49,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:05:49,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:05:49" (1/1) ... [2023-03-31 00:05:49,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6313cfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:49, skipping insertion in model container [2023-03-31 00:05:49,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:05:49" (1/1) ... [2023-03-31 00:05:49,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:05:49,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:05:50,041 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_1071.c[1429,1442] [2023-03-31 00:05:50,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:05:50,057 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:05:50,071 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_1071.c[1429,1442] [2023-03-31 00:05:50,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:05:50,083 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:05:50,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50 WrapperNode [2023-03-31 00:05:50,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:05:50,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:05:50,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:05:50,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:05:50,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:05:50,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:05:50,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:05:50,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:05:50,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (1/1) ... [2023-03-31 00:05:50,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:05:50,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:05:50,151 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 00:05:50,152 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 00:05:50,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:05:50,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:05:50,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:05:50,182 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2023-03-31 00:05:50,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2023-03-31 00:05:50,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:05:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:05:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:05:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:05:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:05:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2023-03-31 00:05:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 00:05:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 00:05:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:05:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:05:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:05:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 00:05:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2023-03-31 00:05:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:05:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:05:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:05:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:05:50,257 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:05:50,262 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:05:50,518 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:05:50,523 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:05:50,523 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-03-31 00:05:50,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:05:50 BoogieIcfgContainer [2023-03-31 00:05:50,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:05:50,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:05:50,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:05:50,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:05:50,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:05:49" (1/3) ... [2023-03-31 00:05:50,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc38cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:05:50, skipping insertion in model container [2023-03-31 00:05:50,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:50" (2/3) ... [2023-03-31 00:05:50,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc38cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:05:50, skipping insertion in model container [2023-03-31 00:05:50,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:05:50" (3/3) ... [2023-03-31 00:05:50,532 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2023-03-31 00:05:50,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:05:50,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:05:50,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:05:50,621 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;@37b987a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:05:50,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:05:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 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 00:05:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 00:05:50,629 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:50,630 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] [2023-03-31 00:05:50,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:50,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -210473957, now seen corresponding path program 1 times [2023-03-31 00:05:50,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:50,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266693794] [2023-03-31 00:05:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:50,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-03-31 00:05:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:50,846 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 00:05:50,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:50,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266693794] [2023-03-31 00:05:50,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266693794] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:50,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:50,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:05:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062782932] [2023-03-31 00:05:50,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:50,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:05:50,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:05:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:05:50,877 INFO L87 Difference]: Start difference. First operand has 43 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 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 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:05:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:05:51,046 INFO L93 Difference]: Finished difference Result 78 states and 110 transitions. [2023-03-31 00:05:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:05:51,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 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 24 [2023-03-31 00:05:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:05:51,055 INFO L225 Difference]: With dead ends: 78 [2023-03-31 00:05:51,055 INFO L226 Difference]: Without dead ends: 39 [2023-03-31 00:05:51,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 00:05:51,065 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 48 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:05:51,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 7 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:05:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-03-31 00:05:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-03-31 00:05:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 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 00:05:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-03-31 00:05:51,119 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 24 [2023-03-31 00:05:51,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:05:51,120 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-03-31 00:05:51,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:05:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2023-03-31 00:05:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-03-31 00:05:51,121 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:51,121 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] [2023-03-31 00:05:51,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:05:51,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:51,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:51,123 INFO L85 PathProgramCache]: Analyzing trace with hash -499449401, now seen corresponding path program 1 times [2023-03-31 00:05:51,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:51,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589261340] [2023-03-31 00:05:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:51,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:51,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 00:05:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:51,426 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 00:05:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589261340] [2023-03-31 00:05:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589261340] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:05:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461228862] [2023-03-31 00:05:51,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:05:51,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:05:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:05:51,430 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:05:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:05:51,637 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2023-03-31 00:05:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:05:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 3 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 25 [2023-03-31 00:05:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:05:51,648 INFO L225 Difference]: With dead ends: 68 [2023-03-31 00:05:51,653 INFO L226 Difference]: Without dead ends: 47 [2023-03-31 00:05:51,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:05:51,655 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 57 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:05:51,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 7 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:05:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-03-31 00:05:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2023-03-31 00:05:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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 00:05:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-03-31 00:05:51,663 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 25 [2023-03-31 00:05:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:05:51,664 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-03-31 00:05:51,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:05:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-03-31 00:05:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 00:05:51,666 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:51,667 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, 1] [2023-03-31 00:05:51,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:05:51,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:51,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1822192547, now seen corresponding path program 1 times [2023-03-31 00:05:51,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345754135] [2023-03-31 00:05:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:51,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 00:05:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:51,912 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 00:05:51,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345754135] [2023-03-31 00:05:51,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345754135] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:51,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:51,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:05:51,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596384978] [2023-03-31 00:05:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:51,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:05:51,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:51,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:05:51,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:05:51,916 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:05:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:05:52,181 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2023-03-31 00:05:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:05:52,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 3 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 26 [2023-03-31 00:05:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:05:52,184 INFO L225 Difference]: With dead ends: 53 [2023-03-31 00:05:52,184 INFO L226 Difference]: Without dead ends: 42 [2023-03-31 00:05:52,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:05:52,192 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 66 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:05:52,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 7 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:05:52,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-03-31 00:05:52,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-03-31 00:05:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 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 00:05:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2023-03-31 00:05:52,206 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 26 [2023-03-31 00:05:52,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:05:52,207 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2023-03-31 00:05:52,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:05:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2023-03-31 00:05:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-31 00:05:52,208 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:52,208 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, 1, 1] [2023-03-31 00:05:52,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 00:05:52,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:52,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:52,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1790963199, now seen corresponding path program 1 times [2023-03-31 00:05:52,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:52,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446500513] [2023-03-31 00:05:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:52,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:05:52,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:05:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:05:52,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:05:52,278 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:05:52,279 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:05:52,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 00:05:52,286 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-03-31 00:05:52,289 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:05:52,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:05:52 BoogieIcfgContainer [2023-03-31 00:05:52,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:05:52,324 INFO L158 Benchmark]: Toolchain (without parser) took 2450.50ms. Allocated memory was 170.9MB in the beginning and 207.6MB in the end (delta: 36.7MB). Free memory was 129.1MB in the beginning and 104.5MB in the end (delta: 24.6MB). Peak memory consumption was 62.7MB. Max. memory is 8.0GB. [2023-03-31 00:05:52,325 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 170.9MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:05:52,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.32ms. Allocated memory is still 170.9MB. Free memory was 129.1MB in the beginning and 118.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:05:52,325 INFO L158 Benchmark]: Boogie Preprocessor took 41.50ms. Allocated memory is still 170.9MB. Free memory was 118.5MB in the beginning and 116.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:05:52,325 INFO L158 Benchmark]: RCFGBuilder took 397.63ms. Allocated memory is still 170.9MB. Free memory was 116.6MB in the beginning and 101.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-03-31 00:05:52,325 INFO L158 Benchmark]: TraceAbstraction took 1797.16ms. Allocated memory was 170.9MB in the beginning and 207.6MB in the end (delta: 36.7MB). Free memory was 101.3MB in the beginning and 104.5MB in the end (delta: -3.2MB). Peak memory consumption was 34.4MB. Max. memory is 8.0GB. [2023-03-31 00:05:52,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 170.9MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.32ms. Allocated memory is still 170.9MB. Free memory was 129.1MB in the beginning and 118.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.50ms. Allocated memory is still 170.9MB. Free memory was 118.5MB in the beginning and 116.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 397.63ms. Allocated memory is still 170.9MB. Free memory was 116.6MB in the beginning and 101.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1797.16ms. Allocated memory was 170.9MB in the beginning and 207.6MB in the end (delta: 36.7MB). Free memory was 101.3MB in the beginning and 104.5MB in the end (delta: -3.2MB). Peak memory consumption was 34.4MB. 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: 59]: 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 46, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] CALL, EXPR trunc_float(x) VAL [\old(x)=6434062345] [L15] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=6434062345, x=6434062345] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 VAL [\old(x)=6434062345, signbit=0, w=2139095040, x=6434062345] [L22] EXPR w & 0x7f800000 VAL [\old(x)=6434062345, signbit=0, w & 0x7f800000=2139095040, w=2139095040, x=6434062345] [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=6434062345, exponent_less_127=128, signbit=0, w=2139095040, x=6434062345] [L39] COND FALSE !(exponent_less_127 == 255) VAL [\old(x)=6434062345, exponent_less_127=128, signbit=0, w=2139095040, x=6434062345] [L42] return x; VAL [\old(x)=6434062345, \result=6434062345, exponent_less_127=128, signbit=0, w=2139095040, x=6434062345] [L55] RET, EXPR trunc_float(x) VAL [trunc_float(x)=6434062345, x=6434062345] [L55] float res = trunc_float(x); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=6434062345] [L46] return x != x; VAL [\old(x)=6434062345, \result=0, x=6434062345] [L58] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=6434062345, x=6434062345] [L58] COND TRUE !isnan_float(res) [L59] reach_error() VAL [res=6434062345, x=6434062345] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 427 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 11 mSDtfsCounter, 427 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 00:05:52,346 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...