/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_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:47:35,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:47:35,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:47:35,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 00:47:35,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:47:35,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:47:35,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:47:35,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:47:35,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:47:35,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:47:35,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:47:35,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:47:35,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:47:35,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:47:35,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:47:35,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:47:35,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 00:47:35,105 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 [2023-04-02 00:47:35,131 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:47:35,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:47:35,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:47:35,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:47:35,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:47:35,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:47:35,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:47:35,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:47:35,136 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:47:35,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:47:35,137 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:47:35,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:47:35,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:47:35,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:47:35,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:47:35,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:47:35,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:47:35,138 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:47:35,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:47:35,138 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:47:35,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:47:35,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:47:35,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:47:35,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:47:35,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:47:35,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:47:35,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:47:35,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:47:35,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:47:35,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:47:35,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:47:35,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:47:35,140 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:47:35,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:47:35,140 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:47:35,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:47:35,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:47:35,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:47:35,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:47:35,370 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:47:35,370 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:47:35,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2023-04-02 00:47:36,624 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:47:36,783 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:47:36,783 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2023-04-02 00:47:36,788 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5846f9ce/7e2c988ca1784c4daf48e480f7950885/FLAG6714b04a3 [2023-04-02 00:47:36,802 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5846f9ce/7e2c988ca1784c4daf48e480f7950885 [2023-04-02 00:47:36,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:47:36,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:47:36,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:47:36,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:47:36,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:47:36,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:47:36" (1/1) ... [2023-04-02 00:47:36,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7855bad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:36, skipping insertion in model container [2023-04-02 00:47:36,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:47:36" (1/1) ... [2023-04-02 00:47:36,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:47:36,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:47:37,005 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_1032a.c[1751,1764] [2023-04-02 00:47:37,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:47:37,021 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:47:37,040 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_1032a.c[1751,1764] [2023-04-02 00:47:37,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:47:37,057 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:47:37,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37 WrapperNode [2023-04-02 00:47:37,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:47:37,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:47:37,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:47:37,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:47:37,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:47:37,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:47:37,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:47:37,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:47:37,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (1/1) ... [2023-04-02 00:47:37,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:47:37,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:47:37,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 00:47:37,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 00:47:37,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:47:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:47:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:47:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2023-04-02 00:47:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2023-04-02 00:47:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:47:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:47:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:47:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:47:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:47:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-04-02 00:47:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2023-04-02 00:47:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 00:47:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-04-02 00:47:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:47:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:47:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:47:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-04-02 00:47:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2023-04-02 00:47:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:47:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:47:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:47:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:47:37,277 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:47:37,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:47:37,595 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:47:37,599 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:47:37,600 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-04-02 00:47:37,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:47:37 BoogieIcfgContainer [2023-04-02 00:47:37,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:47:37,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:47:37,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:47:37,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:47:37,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:47:36" (1/3) ... [2023-04-02 00:47:37,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7b8482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:47:37, skipping insertion in model container [2023-04-02 00:47:37,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:47:37" (2/3) ... [2023-04-02 00:47:37,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7b8482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:47:37, skipping insertion in model container [2023-04-02 00:47:37,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:47:37" (3/3) ... [2023-04-02 00:47:37,607 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a.c [2023-04-02 00:47:37,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:47:37,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 00:47:37,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:47:37,660 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;@31f35397, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:47:37,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 00:47:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 00:47:37,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 00:47:37,681 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:47:37,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:47:37,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:47:37,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:47:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1001693562, now seen corresponding path program 1 times [2023-04-02 00:47:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:47:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879981348] [2023-04-02 00:47:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:47:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:47:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:47:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:37,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:47:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:47:37,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:47:37,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879981348] [2023-04-02 00:47:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879981348] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:47:37,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:47:37,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 00:47:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520808789] [2023-04-02 00:47:37,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:47:37,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 00:47:37,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:47:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 00:47:37,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 00:47:37,981 INFO L87 Difference]: Start difference. First operand has 52 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 00:47:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:47:38,247 INFO L93 Difference]: Finished difference Result 96 states and 141 transitions. [2023-04-02 00:47:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 00:47:38,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-04-02 00:47:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:47:38,259 INFO L225 Difference]: With dead ends: 96 [2023-04-02 00:47:38,259 INFO L226 Difference]: Without dead ends: 48 [2023-04-02 00:47:38,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:47:38,272 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 61 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:47:38,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 7 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:47:38,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-04-02 00:47:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-04-02 00:47:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:47:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-04-02 00:47:38,321 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 19 [2023-04-02 00:47:38,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:47:38,322 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-04-02 00:47:38,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 00:47:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-04-02 00:47:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-02 00:47:38,325 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:47:38,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:47:38,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:47:38,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:47:38,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:47:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 630027471, now seen corresponding path program 1 times [2023-04-02 00:47:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:47:38,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551781366] [2023-04-02 00:47:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:47:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:47:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:47:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:47:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:47:38,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:47:38,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551781366] [2023-04-02 00:47:38,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551781366] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:47:38,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:47:38,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:47:38,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579801057] [2023-04-02 00:47:38,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:47:38,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:47:38,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:47:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:47:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:47:38,696 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 00:47:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:47:38,953 INFO L93 Difference]: Finished difference Result 98 states and 130 transitions. [2023-04-02 00:47:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 00:47:38,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-04-02 00:47:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:47:38,961 INFO L225 Difference]: With dead ends: 98 [2023-04-02 00:47:38,962 INFO L226 Difference]: Without dead ends: 68 [2023-04-02 00:47:38,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:47:38,971 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 109 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:47:38,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 7 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:47:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-04-02 00:47:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2023-04-02 00:47:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.392156862745098) internal successors, (71), 51 states have internal predecessors, (71), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:47:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2023-04-02 00:47:38,993 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 20 [2023-04-02 00:47:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:47:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2023-04-02 00:47:38,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 00:47:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2023-04-02 00:47:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-02 00:47:38,997 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:47:38,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:47:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:47:38,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:47:39,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:47:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1517531152, now seen corresponding path program 1 times [2023-04-02 00:47:39,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:47:39,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597454736] [2023-04-02 00:47:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:47:39,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:47:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:39,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:47:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 00:47:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:47:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:47:39,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:47:39,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597454736] [2023-04-02 00:47:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597454736] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:47:39,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:47:39,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:47:39,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430704415] [2023-04-02 00:47:39,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:47:39,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:47:39,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:47:39,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:47:39,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:47:39,176 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 00:47:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:47:39,399 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2023-04-02 00:47:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 00:47:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-04-02 00:47:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:47:39,402 INFO L225 Difference]: With dead ends: 86 [2023-04-02 00:47:39,402 INFO L226 Difference]: Without dead ends: 57 [2023-04-02 00:47:39,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:47:39,408 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:47:39,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 7 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:47:39,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-02 00:47:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-04-02 00:47:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 00:47:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-04-02 00:47:39,428 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 20 [2023-04-02 00:47:39,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:47:39,428 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-04-02 00:47:39,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 00:47:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-04-02 00:47:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 00:47:39,430 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:47:39,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:47:39,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 00:47:39,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 00:47:39,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:47:39,431 INFO L85 PathProgramCache]: Analyzing trace with hash 602090403, now seen corresponding path program 1 times [2023-04-02 00:47:39,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:47:39,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85420736] [2023-04-02 00:47:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:47:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:47:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:47:39,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 00:47:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 00:47:39,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-04-02 00:47:39,493 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 00:47:39,494 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 00:47:39,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 00:47:39,499 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-04-02 00:47:39,503 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 00:47:39,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 12:47:39 BoogieIcfgContainer [2023-04-02 00:47:39,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 00:47:39,521 INFO L158 Benchmark]: Toolchain (without parser) took 2715.04ms. Allocated memory is still 277.9MB. Free memory was 229.7MB in the beginning and 236.8MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:47:39,521 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 196.1MB. Free memory is still 147.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:47:39,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.75ms. Allocated memory is still 277.9MB. Free memory was 229.7MB in the beginning and 218.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 00:47:39,522 INFO L158 Benchmark]: Boogie Preprocessor took 42.58ms. Allocated memory is still 277.9MB. Free memory was 218.7MB in the beginning and 217.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 00:47:39,522 INFO L158 Benchmark]: RCFGBuilder took 498.89ms. Allocated memory is still 277.9MB. Free memory was 217.1MB in the beginning and 200.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-04-02 00:47:39,522 INFO L158 Benchmark]: TraceAbstraction took 1918.14ms. Allocated memory is still 277.9MB. Free memory was 199.8MB in the beginning and 236.8MB in the end (delta: -37.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 00:47:39,524 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 196.1MB. Free memory is still 147.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.75ms. Allocated memory is still 277.9MB. Free memory was 229.7MB in the beginning and 218.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.58ms. Allocated memory is still 277.9MB. Free memory was 218.7MB in the beginning and 217.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 498.89ms. Allocated memory is still 277.9MB. Free memory was 217.1MB in the beginning and 200.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1918.14ms. Allocated memory is still 277.9MB. Free memory was 199.8MB in the beginning and 236.8MB in the end (delta: -37.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 82]: 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 81, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L77] float x = 0.0f; VAL [x=0] [L78] CALL, EXPR round_float(x) VAL [\old(x)=0] [L15] __uint32_t w; [L17] int exponent_less_127; VAL [\old(x)=0, x=0] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (w) = gf_u.word [L25] EXPR w & 0x7f800000 VAL [\old(x)=0, w & 0x7f800000=2139095040, w=2139095040, x=0] [L25] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L27] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=0, exponent_less_127=128, w=2139095040, x=0] [L43] COND TRUE exponent_less_127 == 128 [L45] return x + x; VAL [\old(x)=0, exponent_less_127=128, w=2139095040, x=0] [L78] RET, EXPR round_float(x) VAL [round_float(x)=2139095049, x=0] [L78] float res = round_float(x); [L81] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res == 0.0f && __signbit_float(res) == 0=0, res=2139095049, x=0] [L81] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L82] reach_error() VAL [res=2139095049, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 246 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 596 IncrementalHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 11 mSDtfsCounter, 596 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 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 [2023-04-02 00:47:39,540 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...