/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_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:05:42,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:05:42,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:05:42,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:05:42,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:05:42,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:05:42,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:05:42,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:05:42,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:05:42,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:05:42,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:05:42,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:05:42,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:05:42,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:05:42,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:05:42,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:05:42,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:05:42,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:05:42,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:05:42,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:05:42,985 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 00:05:42,996 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:05:42,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:05:42,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:05:42,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:05:42,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:05:42,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:05:42,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:05:42,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:05:42,998 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:05:42,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:05:42,998 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:05:42,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:05:42,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:05:42,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:05:42,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:05:42,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:05:42,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:05:42,999 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:05:42,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:05:42,999 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:05:42,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:05:42,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:05:42,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:05:43,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:05:43,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:05:43,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:05:43,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:05:43,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:05:43,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:05:43,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:05:43,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:05:43,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:05:43,001 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:05:43,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:05:43,001 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:05:43,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:05:43,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:05:43,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:05:43,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:05:43,168 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:05:43,168 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:05:43,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032d.c [2023-03-31 00:05:44,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:05:44,409 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:05:44,410 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032d.c [2023-03-31 00:05:44,413 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a1607b8/4f6d467abb454aa29fcdb96ecdfc1e33/FLAGfa3e4d0eb [2023-03-31 00:05:44,422 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a1607b8/4f6d467abb454aa29fcdb96ecdfc1e33 [2023-03-31 00:05:44,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:05:44,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:05:44,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:05:44,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:05:44,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:05:44,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4ab64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44, skipping insertion in model container [2023-03-31 00:05:44,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:05:44,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:05:44,552 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_1032d.c[1744,1757] [2023-03-31 00:05:44,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:05:44,575 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:05:44,590 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_1032d.c[1744,1757] [2023-03-31 00:05:44,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:05:44,600 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:05:44,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44 WrapperNode [2023-03-31 00:05:44,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:05:44,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:05:44,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:05:44,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:05:44,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,621 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:05:44,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:05:44,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:05:44,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:05:44,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (1/1) ... [2023-03-31 00:05:44,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:05:44,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:05:44,652 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 00:05:44,664 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 00:05:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:05:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:05:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:05:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2023-03-31 00:05:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2023-03-31 00:05:44,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:05:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:05:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:05:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:05:44,731 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:05:44,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:05:44,947 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:05:44,952 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:05:44,952 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-03-31 00:05:44,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:05:44 BoogieIcfgContainer [2023-03-31 00:05:44,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:05:44,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:05:44,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:05:44,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:05:44,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:05:44" (1/3) ... [2023-03-31 00:05:44,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a4c80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:05:44, skipping insertion in model container [2023-03-31 00:05:44,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:05:44" (2/3) ... [2023-03-31 00:05:44,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a4c80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:05:44, skipping insertion in model container [2023-03-31 00:05:44,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:05:44" (3/3) ... [2023-03-31 00:05:44,959 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2023-03-31 00:05:44,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:05:44,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:05:45,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:05:45,037 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;@42f2f340, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:05:45,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:05:45,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 42 states have internal predecessors, (64), 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 00:05:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-03-31 00:05:45,049 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:45,049 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 00:05:45,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:45,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1647762129, now seen corresponding path program 1 times [2023-03-31 00:05:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:45,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452824860] [2023-03-31 00:05:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:45,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 00:05:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:45,285 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 00:05:45,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:45,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452824860] [2023-03-31 00:05:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452824860] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:45,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:45,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:05:45,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159143446] [2023-03-31 00:05:45,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:45,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:05:45,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:05:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:05:45,318 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 42 states have internal predecessors, (64), 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 4.5) internal successors, (18), 2 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 00:05:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:05:45,490 INFO L93 Difference]: Finished difference Result 94 states and 137 transitions. [2023-03-31 00:05:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:05:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 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 00:05:45,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:05:45,497 INFO L225 Difference]: With dead ends: 94 [2023-03-31 00:05:45,497 INFO L226 Difference]: Without dead ends: 47 [2023-03-31 00:05:45,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 00:05:45,501 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:05:45,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 7 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:05:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-03-31 00:05:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-03-31 00:05:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 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 00:05:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2023-03-31 00:05:45,528 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 25 [2023-03-31 00:05:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:05:45,528 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2023-03-31 00:05:45,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 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 00:05:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2023-03-31 00:05:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-31 00:05:45,529 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:45,529 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 00:05:45,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:05:45,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:45,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1949654312, now seen corresponding path program 1 times [2023-03-31 00:05:45,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:45,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118393818] [2023-03-31 00:05:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:45,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:45,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:45,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-03-31 00:05:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:45,840 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 00:05:45,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118393818] [2023-03-31 00:05:45,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118393818] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:45,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:45,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:05:45,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302328098] [2023-03-31 00:05:45,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:45,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:05:45,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:45,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:05:45,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:05:45,845 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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 00:05:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:05:46,053 INFO L93 Difference]: Finished difference Result 96 states and 126 transitions. [2023-03-31 00:05:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:05:46,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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 27 [2023-03-31 00:05:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:05:46,056 INFO L225 Difference]: With dead ends: 96 [2023-03-31 00:05:46,056 INFO L226 Difference]: Without dead ends: 67 [2023-03-31 00:05:46,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 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 00:05:46,058 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 107 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:05:46,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 7 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:05:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-03-31 00:05:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2023-03-31 00:05:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 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 00:05:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-03-31 00:05:46,065 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 27 [2023-03-31 00:05:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:05:46,065 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-03-31 00:05:46,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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 00:05:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2023-03-31 00:05:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-31 00:05:46,066 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:46,066 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 00:05:46,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:05:46,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:46,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:46,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1444095687, now seen corresponding path program 1 times [2023-03-31 00:05:46,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:46,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726391831] [2023-03-31 00:05:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:46,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:46,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:05:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:05:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:46,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-03-31 00:05:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:05:46,174 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 00:05:46,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:05:46,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726391831] [2023-03-31 00:05:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726391831] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:05:46,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:05:46,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:05:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811227725] [2023-03-31 00:05:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:05:46,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:05:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:05:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:05:46,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:05:46,176 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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 00:05:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:05:46,320 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2023-03-31 00:05:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:05:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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 27 [2023-03-31 00:05:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:05:46,321 INFO L225 Difference]: With dead ends: 84 [2023-03-31 00:05:46,321 INFO L226 Difference]: Without dead ends: 56 [2023-03-31 00:05:46,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 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 00:05:46,323 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:05:46,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 7 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:05:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-03-31 00:05:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2023-03-31 00:05:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 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 00:05:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-03-31 00:05:46,328 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 27 [2023-03-31 00:05:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:05:46,328 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-03-31 00:05:46,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 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 00:05:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-03-31 00:05:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-03-31 00:05:46,329 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:05:46,329 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, 1] [2023-03-31 00:05:46,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 00:05:46,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:05:46,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:05:46,329 INFO L85 PathProgramCache]: Analyzing trace with hash 61011509, now seen corresponding path program 1 times [2023-03-31 00:05:46,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:05:46,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909284097] [2023-03-31 00:05:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:05:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:05:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:05:46,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:05:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:05:46,363 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:05:46,363 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:05:46,363 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:05:46,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 00:05:46,366 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-03-31 00:05:46,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:05:46,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:05:46 BoogieIcfgContainer [2023-03-31 00:05:46,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:05:46,394 INFO L158 Benchmark]: Toolchain (without parser) took 1969.44ms. Allocated memory was 201.3MB in the beginning and 297.8MB in the end (delta: 96.5MB). Free memory was 156.5MB in the beginning and 152.6MB in the end (delta: 3.9MB). Peak memory consumption was 101.1MB. Max. memory is 8.0GB. [2023-03-31 00:05:46,395 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:05:46,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.85ms. Allocated memory is still 201.3MB. Free memory was 156.5MB in the beginning and 145.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:05:46,397 INFO L158 Benchmark]: Boogie Preprocessor took 25.15ms. Allocated memory is still 201.3MB. Free memory was 145.7MB in the beginning and 143.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:05:46,397 INFO L158 Benchmark]: RCFGBuilder took 327.62ms. Allocated memory is still 201.3MB. Free memory was 143.6MB in the beginning and 128.2MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-03-31 00:05:46,397 INFO L158 Benchmark]: TraceAbstraction took 1438.32ms. Allocated memory was 201.3MB in the beginning and 297.8MB in the end (delta: 96.5MB). Free memory was 127.5MB in the beginning and 152.6MB in the end (delta: -25.1MB). Peak memory consumption was 71.7MB. Max. memory is 8.0GB. [2023-03-31 00:05:46,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 201.3MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 174.85ms. Allocated memory is still 201.3MB. Free memory was 156.5MB in the beginning and 145.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.15ms. Allocated memory is still 201.3MB. Free memory was 145.7MB in the beginning and 143.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 327.62ms. Allocated memory is still 201.3MB. Free memory was 143.6MB in the beginning and 128.2MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1438.32ms. Allocated memory was 201.3MB in the beginning and 297.8MB in the end (delta: 96.5MB). Free memory was 127.5MB in the beginning and 152.6MB in the end (delta: -25.1MB). Peak memory consumption was 71.7MB. 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: 80]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L75] float x = -1.0f / 0.0f; [L76] CALL, EXPR round_float(x) VAL [\old(x)=2147483661] [L14] __uint32_t w; [L16] int exponent_less_127; VAL [\old(x)=2147483661, x=2147483661] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] EXPR w & 0x7f800000 VAL [\old(x)=2147483661, w & 0x7f800000=2139095040, w=2139095040, x=2147483661] [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=2147483661, exponent_less_127=128, w=2139095040, x=2147483661] [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; VAL [\old(x)=2147483661, exponent_less_127=128, w=2139095040, x=2147483661] [L76] RET, EXPR round_float(x) VAL [round_float(x)=2147483660, x=2147483661] [L76] float res = round_float(x); [L79] CALL, EXPR isinf_float(res) VAL [\old(x)=2147483660] [L58] __int32_t ix; VAL [\old(x)=2147483660, x=2147483660] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); VAL [\old(x)=2147483660, \result=0, ix=0, x=2147483660] [L79] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=2147483660, x=2147483661] [L79] COND TRUE !isinf_float(res) [L80] reach_error() VAL [res=2147483660, x=2147483661] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 240 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 237 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 576 IncrementalHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 11 mSDtfsCounter, 576 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=58occurred in iteration=2, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 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 00:05:46,412 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...