./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:49:04,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:49:04,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:49:04,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:49:04,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:49:04,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:49:04,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:49:04,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:49:04,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:49:04,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:49:04,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:49:04,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:49:04,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:49:04,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:49:04,299 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:49:04,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:49:04,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:49:04,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:49:04,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:49:04,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:49:04,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:49:04,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:49:04,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:49:04,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:49:04,302 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:49:04,303 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:49:04,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:49:04,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:49:04,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:49:04,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:49:04,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:49:04,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:49:04,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:49:04,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:49:04,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:49:04,306 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:49:04,306 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:49:04,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:49:04,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:49:04,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:49:04,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:49:04,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:49:04,308 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2024-10-12 21:49:04,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:49:04,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:49:04,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:49:04,599 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:49:04,599 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:49:04,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2024-10-12 21:49:06,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:49:06,317 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:49:06,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2024-10-12 21:49:06,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e812c505/6c4fa2331d7a4ac5b0f9b55a6c6384a8/FLAG8f7286432 [2024-10-12 21:49:06,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e812c505/6c4fa2331d7a4ac5b0f9b55a6c6384a8 [2024-10-12 21:49:06,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:49:06,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:49:06,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:49:06,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:49:06,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:49:06,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4045a45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06, skipping insertion in model container [2024-10-12 21:49:06,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:49:06,626 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2024-10-12 21:49:06,640 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2024-10-12 21:49:06,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:49:06,753 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:49:06,770 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2024-10-12 21:49:06,771 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2024-10-12 21:49:06,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:49:06,842 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:49:06,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06 WrapperNode [2024-10-12 21:49:06,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:49:06,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:49:06,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:49:06,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:49:06,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,890 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-10-12 21:49:06,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:49:06,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:49:06,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:49:06,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:49:06,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,925 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 21:49:06,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:49:06,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:49:06,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:49:06,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:49:06,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (1/1) ... [2024-10-12 21:49:06,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:49:06,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:49:06,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 21:49:06,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 21:49:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:49:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-12 21:49:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-12 21:49:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-10-12 21:49:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-10-12 21:49:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:49:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:49:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:49:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 21:49:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 21:49:07,116 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:49:07,118 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:49:07,427 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-10-12 21:49:07,428 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:49:07,459 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:49:07,460 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:49:07,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:49:07 BoogieIcfgContainer [2024-10-12 21:49:07,460 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:49:07,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:49:07,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:49:07,465 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:49:07,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:49:06" (1/3) ... [2024-10-12 21:49:07,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c660f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:49:07, skipping insertion in model container [2024-10-12 21:49:07,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:06" (2/3) ... [2024-10-12 21:49:07,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c660f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:49:07, skipping insertion in model container [2024-10-12 21:49:07,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:49:07" (3/3) ... [2024-10-12 21:49:07,469 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2024-10-12 21:49:07,485 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:49:07,486 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:49:07,542 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:49:07,548 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4433ed0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:49:07,549 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:49:07,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 69 states have internal predecessors, (104), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-12 21:49:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 21:49:07,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:49:07,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 21:49:07,561 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:49:07,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:49:07,567 INFO L85 PathProgramCache]: Analyzing trace with hash 202174098, now seen corresponding path program 1 times [2024-10-12 21:49:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:49:07,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413967148] [2024-10-12 21:49:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:49:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:49:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:49:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:49:07,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:49:07,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413967148] [2024-10-12 21:49:07,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413967148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:49:07,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:49:07,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:49:07,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129142900] [2024-10-12 21:49:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:49:07,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:49:07,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:49:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:49:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:49:07,721 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 69 states have internal predecessors, (104), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:49:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:49:07,759 INFO L93 Difference]: Finished difference Result 158 states and 241 transitions. [2024-10-12 21:49:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:49:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-12 21:49:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:49:07,769 INFO L225 Difference]: With dead ends: 158 [2024-10-12 21:49:07,770 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 21:49:07,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:49:07,779 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:49:07,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:49:07,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 21:49:07,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-12 21:49:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 64 states have (on average 1.40625) internal successors, (90), 66 states have internal predecessors, (90), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-12 21:49:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2024-10-12 21:49:07,824 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 6 [2024-10-12 21:49:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:49:07,826 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2024-10-12 21:49:07,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:49:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2024-10-12 21:49:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 21:49:07,827 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:49:07,828 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 21:49:07,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:49:07,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:49:07,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:49:07,830 INFO L85 PathProgramCache]: Analyzing trace with hash 202233680, now seen corresponding path program 1 times [2024-10-12 21:49:07,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:49:07,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425889751] [2024-10-12 21:49:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:49:07,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:49:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 21:49:07,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 21:49:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 21:49:07,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 21:49:07,890 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-12 21:49:07,892 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-12 21:49:07,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-12 21:49:07,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:49:07,898 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-12 21:49:07,910 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 21:49:07,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:49:07 BoogieIcfgContainer [2024-10-12 21:49:07,914 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 21:49:07,914 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 21:49:07,914 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 21:49:07,915 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 21:49:07,915 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:49:07" (3/4) ... [2024-10-12 21:49:07,917 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 21:49:07,918 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 21:49:07,919 INFO L158 Benchmark]: Toolchain (without parser) took 1570.96ms. Allocated memory is still 167.8MB. Free memory was 101.0MB in the beginning and 82.8MB in the end (delta: 18.2MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-10-12 21:49:07,919 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 21:49:07,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.66ms. Allocated memory is still 167.8MB. Free memory was 100.8MB in the beginning and 136.7MB in the end (delta: -35.9MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2024-10-12 21:49:07,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.91ms. Allocated memory is still 167.8MB. Free memory was 136.6MB in the beginning and 134.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 21:49:07,921 INFO L158 Benchmark]: Boogie Preprocessor took 54.66ms. Allocated memory is still 167.8MB. Free memory was 134.6MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 21:49:07,922 INFO L158 Benchmark]: RCFGBuilder took 512.63ms. Allocated memory is still 167.8MB. Free memory was 132.4MB in the beginning and 109.4MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-12 21:49:07,922 INFO L158 Benchmark]: TraceAbstraction took 451.39ms. Allocated memory is still 167.8MB. Free memory was 108.7MB in the beginning and 83.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-12 21:49:07,924 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 167.8MB. Free memory was 83.5MB in the beginning and 82.8MB in the end (delta: 678.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 21:49:07,926 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.66ms. Allocated memory is still 167.8MB. Free memory was 100.8MB in the beginning and 136.7MB in the end (delta: -35.9MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.91ms. Allocated memory is still 167.8MB. Free memory was 136.6MB in the beginning and 134.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.66ms. Allocated memory is still 167.8MB. Free memory was 134.6MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 512.63ms. Allocated memory is still 167.8MB. Free memory was 132.4MB in the beginning and 109.4MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 451.39ms. Allocated memory is still 167.8MB. Free memory was 108.7MB in the beginning and 83.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 167.8MB. Free memory was 83.5MB in the beginning and 82.8MB in the end (delta: 678.3kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.39843f) [L48] reach_error() - UnprovableResult [Line: 61]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 104 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-12 21:49:07,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:49:10,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:49:10,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-12 21:49:10,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:49:10,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:49:10,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:49:10,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:49:10,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:49:10,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:49:10,291 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:49:10,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:49:10,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:49:10,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:49:10,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:49:10,296 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:49:10,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:49:10,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:49:10,297 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:49:10,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:49:10,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:49:10,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:49:10,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:49:10,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:49:10,302 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-12 21:49:10,302 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-12 21:49:10,302 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:49:10,302 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-12 21:49:10,303 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:49:10,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:49:10,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:49:10,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:49:10,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:49:10,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:49:10,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:49:10,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:49:10,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:49:10,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:49:10,306 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:49:10,306 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-12 21:49:10,306 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-12 21:49:10,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:49:10,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:49:10,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:49:10,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:49:10,308 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-12 21:49:10,308 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2024-10-12 21:49:10,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:49:10,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:49:10,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:49:10,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:49:10,635 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:49:10,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2024-10-12 21:49:12,243 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:49:12,481 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:49:12,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2024-10-12 21:49:12,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d3bc206/ad10cbe9a3214cdeab869b8d6776ed38/FLAGd89689289 [2024-10-12 21:49:12,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d3bc206/ad10cbe9a3214cdeab869b8d6776ed38 [2024-10-12 21:49:12,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:49:12,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:49:12,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:49:12,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:49:12,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:49:12,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:12,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30827cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12, skipping insertion in model container [2024-10-12 21:49:12,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:12,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:49:12,761 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2024-10-12 21:49:12,768 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2024-10-12 21:49:12,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:49:12,838 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:49:12,854 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2024-10-12 21:49:12,857 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2024-10-12 21:49:12,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:49:12,917 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:49:12,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12 WrapperNode [2024-10-12 21:49:12,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:49:12,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:49:12,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:49:12,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:49:12,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:12,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:12,969 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-10-12 21:49:12,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:49:12,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:49:12,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:49:12,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:49:12,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:12,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:12,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:13,016 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 21:49:13,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:13,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:13,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:13,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:13,038 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:13,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:13,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:49:13,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:49:13,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:49:13,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:49:13,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (1/1) ... [2024-10-12 21:49:13,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:49:13,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:49:13,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 21:49:13,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 21:49:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:49:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-12 21:49:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-12 21:49:13,144 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-12 21:49:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-10-12 21:49:13,145 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-10-12 21:49:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:49:13,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:49:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 21:49:13,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 21:49:13,230 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:49:13,233 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:49:17,992 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-10-12 21:49:17,992 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:49:18,029 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:49:18,030 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:49:18,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:49:18 BoogieIcfgContainer [2024-10-12 21:49:18,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:49:18,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:49:18,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:49:18,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:49:18,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:49:12" (1/3) ... [2024-10-12 21:49:18,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4881316d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:49:18, skipping insertion in model container [2024-10-12 21:49:18,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:49:12" (2/3) ... [2024-10-12 21:49:18,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4881316d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:49:18, skipping insertion in model container [2024-10-12 21:49:18,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:49:18" (3/3) ... [2024-10-12 21:49:18,041 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2024-10-12 21:49:18,061 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:49:18,062 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:49:18,138 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:49:18,145 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6419c574, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:49:18,146 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:49:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-12 21:49:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 21:49:18,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:49:18,158 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 21:49:18,159 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:49:18,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:49:18,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2097064236, now seen corresponding path program 1 times [2024-10-12 21:49:18,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 21:49:18,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592261010] [2024-10-12 21:49:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:49:18,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 21:49:18,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 21:49:18,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-12 21:49:18,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-12 21:49:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:49:18,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-12 21:49:18,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:49:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:49:18,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:49:18,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 21:49:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592261010] [2024-10-12 21:49:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592261010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:49:18,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:49:18,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:49:18,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077446906] [2024-10-12 21:49:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:49:18,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:49:18,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 21:49:18,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:49:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:49:18,650 INFO L87 Difference]: Start difference. First operand has 57 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:49:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:49:18,731 INFO L93 Difference]: Finished difference Result 110 states and 167 transitions. [2024-10-12 21:49:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:49:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-12 21:49:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:49:18,739 INFO L225 Difference]: With dead ends: 110 [2024-10-12 21:49:18,739 INFO L226 Difference]: Without dead ends: 53 [2024-10-12 21:49:18,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:49:18,756 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:49:18,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:49:18,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-12 21:49:18,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-12 21:49:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.375) internal successors, (55), 42 states have internal predecessors, (55), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-12 21:49:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2024-10-12 21:49:18,801 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 6 [2024-10-12 21:49:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:49:18,801 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2024-10-12 21:49:18,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:49:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2024-10-12 21:49:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 21:49:18,803 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:49:18,803 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 21:49:18,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-12 21:49:19,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 21:49:19,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:49:19,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:49:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2097123818, now seen corresponding path program 1 times [2024-10-12 21:49:19,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 21:49:19,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720939375] [2024-10-12 21:49:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:49:19,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-12 21:49:19,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 21:49:19,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-12 21:49:19,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-12 21:50:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 21:50:37,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.