./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_6+soft_float_4-3a.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_6+soft_float_4-3a.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 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:51:55,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:51:55,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:51:55,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:51:55,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:51:55,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:51:55,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:51:55,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:51:55,977 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:51:55,977 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:51:55,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:51:55,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:51:55,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:51:55,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:51:55,983 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:51:55,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:51:55,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:51:55,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:51:55,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:51:55,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:51:55,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:51:55,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:51:55,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:51:55,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:51:55,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:51:55,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:51:55,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:51:55,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:51:55,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:51:55,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:51:55,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:51:55,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:51:55,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:51:55,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:51:55,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:51:55,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:51:55,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:51:55,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:51:55,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:51:55,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:51:55,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:51:55,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:51:55,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 [2024-10-12 21:51:56,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:51:56,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:51:56,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:51:56,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:51:56,303 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:51:56,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2024-10-12 21:51:57,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:51:57,977 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:51:57,978 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2024-10-12 21:51:57,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b0ed32c/393aab372371448b81bac64aa38a019d/FLAG60c578926 [2024-10-12 21:51:58,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b0ed32c/393aab372371448b81bac64aa38a019d [2024-10-12 21:51:58,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:51:58,004 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:51:58,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:51:58,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:51:58,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:51:58,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55755325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58, skipping insertion in model container [2024-10-12 21:51:58,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,042 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:51:58,237 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_6+soft_float_4-3a.c.cil.c[1997,2010] [2024-10-12 21:51:58,245 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_6+soft_float_4-3a.c.cil.c[2366,2379] [2024-10-12 21:51:58,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:51:58,316 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:51:58,331 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_6+soft_float_4-3a.c.cil.c[1997,2010] [2024-10-12 21:51:58,336 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_6+soft_float_4-3a.c.cil.c[2366,2379] [2024-10-12 21:51:58,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:51:58,383 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:51:58,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58 WrapperNode [2024-10-12 21:51:58,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:51:58,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:51:58,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:51:58,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:51:58,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,418 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-10-12 21:51:58,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:51:58,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:51:58,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:51:58,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:51:58,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,450 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 21:51:58,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,462 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:51:58,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:51:58,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:51:58,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:51:58,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (1/1) ... [2024-10-12 21:51:58,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:51:58,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:51:58,506 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 21:51:58,509 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 21:51:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:51:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-12 21:51:58,548 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-12 21:51:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-10-12 21:51:58,549 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-10-12 21:51:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:51:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:51:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:51:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 21:51:58,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 21:51:58,623 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:51:58,625 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:51:58,996 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-10-12 21:51:58,996 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:51:59,024 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:51:59,024 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:51:59,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:51:59 BoogieIcfgContainer [2024-10-12 21:51:59,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:51:59,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:51:59,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:51:59,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:51:59,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:51:58" (1/3) ... [2024-10-12 21:51:59,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df2b927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:51:59, skipping insertion in model container [2024-10-12 21:51:59,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:51:58" (2/3) ... [2024-10-12 21:51:59,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df2b927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:51:59, skipping insertion in model container [2024-10-12 21:51:59,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:51:59" (3/3) ... [2024-10-12 21:51:59,036 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-3a.c.cil.c [2024-10-12 21:51:59,051 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:51:59,052 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:51:59,100 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:51:59,106 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;@63fa5d02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:51:59,106 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:51:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 68 states have internal predecessors, (102), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-12 21:51:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 21:51:59,119 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:51:59,119 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 21:51:59,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:51:59,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:51:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash 116286645, now seen corresponding path program 1 times [2024-10-12 21:51:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:51:59,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132993126] [2024-10-12 21:51:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:51:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:51:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:51:59,261 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 21:51:59,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:51:59,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132993126] [2024-10-12 21:51:59,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132993126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:51:59,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:51:59,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:51:59,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778518494] [2024-10-12 21:51:59,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:51:59,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:51:59,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:51:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:51:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:51:59,290 INFO L87 Difference]: Start difference. First operand has 81 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 68 states have internal predecessors, (102), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 21:51:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:51:59,334 INFO L93 Difference]: Finished difference Result 158 states and 242 transitions. [2024-10-12 21:51:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:51:59,340 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 21:51:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:51:59,348 INFO L225 Difference]: With dead ends: 158 [2024-10-12 21:51:59,349 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 21:51:59,354 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 21:51:59,358 INFO L432 NwaCegarLoop]: 105 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, 105 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 21:51:59,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:51:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 21:51:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-12 21:51:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 65 states have internal predecessors, (89), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-12 21:51:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 106 transitions. [2024-10-12 21:51:59,413 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 106 transitions. Word has length 6 [2024-10-12 21:51:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:51:59,413 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 106 transitions. [2024-10-12 21:51:59,414 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 21:51:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 106 transitions. [2024-10-12 21:51:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 21:51:59,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:51:59,417 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 21:51:59,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:51:59,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:51:59,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:51:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 116346227, now seen corresponding path program 1 times [2024-10-12 21:51:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:51:59,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404565937] [2024-10-12 21:51:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:51:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:51:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 21:51:59,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 21:51:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 21:51:59,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 21:51:59,465 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-12 21:51:59,466 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-12 21:51:59,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-12 21:51:59,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:51:59,471 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-12 21:51:59,482 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 21:51:59,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:51:59 BoogieIcfgContainer [2024-10-12 21:51:59,485 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 21:51:59,486 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 21:51:59,486 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 21:51:59,486 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 21:51:59,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:51:59" (3/4) ... [2024-10-12 21:51:59,488 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 21:51:59,489 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 21:51:59,490 INFO L158 Benchmark]: Toolchain (without parser) took 1485.81ms. Allocated memory is still 169.9MB. Free memory was 121.2MB in the beginning and 96.5MB in the end (delta: 24.8MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2024-10-12 21:51:59,490 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 60.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 21:51:59,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.24ms. Allocated memory is still 169.9MB. Free memory was 121.2MB in the beginning and 105.1MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-12 21:51:59,491 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.49ms. Allocated memory is still 169.9MB. Free memory was 105.1MB in the beginning and 103.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 21:51:59,492 INFO L158 Benchmark]: Boogie Preprocessor took 45.88ms. Allocated memory is still 169.9MB. Free memory was 103.6MB in the beginning and 100.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 21:51:59,492 INFO L158 Benchmark]: RCFGBuilder took 558.01ms. Allocated memory is still 169.9MB. Free memory was 100.9MB in the beginning and 122.7MB in the end (delta: -21.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-12 21:51:59,493 INFO L158 Benchmark]: TraceAbstraction took 457.60ms. Allocated memory is still 169.9MB. Free memory was 122.7MB in the beginning and 96.5MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-12 21:51:59,493 INFO L158 Benchmark]: Witness Printer took 3.78ms. Allocated memory is still 169.9MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 21:51:59,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 60.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.24ms. Allocated memory is still 169.9MB. Free memory was 121.2MB in the beginning and 105.1MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.49ms. Allocated memory is still 169.9MB. Free memory was 105.1MB in the beginning and 103.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.88ms. Allocated memory is still 169.9MB. Free memory was 103.6MB in the beginning and 100.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 558.01ms. Allocated memory is still 169.9MB. Free memory was 100.9MB in the beginning and 122.7MB in the end (delta: -21.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 457.60ms. Allocated memory is still 169.9MB. Free memory was 122.7MB in the beginning and 96.5MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.78ms. Allocated memory is still 169.9MB. Free memory is still 96.5MB. 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: [L309] COND TRUE __VERIFIER_nondet_int() [L310] 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 < 1.399f) [L48] reach_error() - UnprovableResult [Line: 60]: 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, 105 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, 105 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 21:51:59,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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_6+soft_float_4-3a.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 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:52:01,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:52:01,812 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-12 21:52:01,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:52:01,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:52:01,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:52:01,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:52:01,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:52:01,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:52:01,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:52:01,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:52:01,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:52:01,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:52:01,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:52:01,861 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:52:01,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:52:01,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:52:01,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:52:01,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:52:01,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:52:01,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:52:01,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:52:01,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:52:01,870 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-12 21:52:01,870 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-12 21:52:01,870 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:52:01,870 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-12 21:52:01,870 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:52:01,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:52:01,871 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:52:01,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:52:01,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:52:01,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:52:01,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:52:01,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:52:01,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:52:01,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:52:01,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:52:01,875 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-12 21:52:01,875 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-12 21:52:01,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:52:01,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:52:01,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:52:01,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:52:01,876 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-12 21:52:01,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f9af890a0b98df8fb43a2c8ebf2715c4a4b8a7c4e81db20c6dd9c8d356ba701 [2024-10-12 21:52:02,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:52:02,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:52:02,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:52:02,232 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:52:02,233 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:52:02,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2024-10-12 21:52:03,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:52:04,111 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:52:04,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_4-3a.c.cil.c [2024-10-12 21:52:04,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f7182ef6/b83383bb2ca740e185c52e5fb379632b/FLAG41badc1c5 [2024-10-12 21:52:04,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f7182ef6/b83383bb2ca740e185c52e5fb379632b [2024-10-12 21:52:04,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:52:04,475 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:52:04,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:52:04,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:52:04,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:52:04,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2292ca11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04, skipping insertion in model container [2024-10-12 21:52:04,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,510 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:52:04,715 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_6+soft_float_4-3a.c.cil.c[1997,2010] [2024-10-12 21:52:04,724 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_6+soft_float_4-3a.c.cil.c[2366,2379] [2024-10-12 21:52:04,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:52:04,815 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:52:04,834 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_6+soft_float_4-3a.c.cil.c[1997,2010] [2024-10-12 21:52:04,838 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_6+soft_float_4-3a.c.cil.c[2366,2379] [2024-10-12 21:52:04,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:52:04,891 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:52:04,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04 WrapperNode [2024-10-12 21:52:04,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:52:04,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:52:04,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:52:04,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:52:04,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,939 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-10-12 21:52:04,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:52:04,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:52:04,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:52:04,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:52:04,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,972 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 21:52:04,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:04,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:05,000 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:05,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:05,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:52:05,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:52:05,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:52:05,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:52:05,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (1/1) ... [2024-10-12 21:52:05,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:52:05,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:52:05,032 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 21:52:05,034 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 21:52:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:52:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-12 21:52:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-12 21:52:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-12 21:52:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-10-12 21:52:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-10-12 21:52:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:52:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:52:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 21:52:05,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 21:52:05,137 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:52:05,139 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:52:09,901 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-10-12 21:52:09,901 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:52:09,926 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:52:09,927 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:52:09,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:52:09 BoogieIcfgContainer [2024-10-12 21:52:09,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:52:09,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:52:09,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:52:09,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:52:09,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:52:04" (1/3) ... [2024-10-12 21:52:09,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423427e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:52:09, skipping insertion in model container [2024-10-12 21:52:09,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:52:04" (2/3) ... [2024-10-12 21:52:09,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423427e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:52:09, skipping insertion in model container [2024-10-12 21:52:09,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:52:09" (3/3) ... [2024-10-12 21:52:09,937 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_4-3a.c.cil.c [2024-10-12 21:52:09,952 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:52:09,952 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:52:10,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:52:10,023 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;@21c32a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:52:10,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:52:10,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 44 states have internal predecessors, (65), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-12 21:52:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 21:52:10,033 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:52:10,034 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 21:52:10,035 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:52:10,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:52:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2011176783, now seen corresponding path program 1 times [2024-10-12 21:52:10,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 21:52:10,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113073519] [2024-10-12 21:52:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:52:10,051 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 21:52:10,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 21:52:10,052 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 21:52:10,053 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 21:52:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:52:10,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-12 21:52:10,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:52:10,423 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 21:52:10,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:52:10,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-12 21:52:10,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113073519] [2024-10-12 21:52:10,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113073519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:52:10,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:52:10,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:52:10,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622263446] [2024-10-12 21:52:10,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:52:10,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:52:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-12 21:52:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:52:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:52:10,456 INFO L87 Difference]: Start difference. First operand has 57 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 44 states have internal predecessors, (65), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 21:52:10,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:52:10,538 INFO L93 Difference]: Finished difference Result 110 states and 168 transitions. [2024-10-12 21:52:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:52:10,540 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 21:52:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:52:10,547 INFO L225 Difference]: With dead ends: 110 [2024-10-12 21:52:10,548 INFO L226 Difference]: Without dead ends: 53 [2024-10-12 21:52:10,552 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 21:52:10,556 INFO L432 NwaCegarLoop]: 70 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, 70 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 21:52:10,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:52:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-12 21:52:10,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-12 21:52:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 41 states have internal predecessors, (54), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-12 21:52:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2024-10-12 21:52:10,597 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 6 [2024-10-12 21:52:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:52:10,597 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2024-10-12 21:52:10,597 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 21:52:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2024-10-12 21:52:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-12 21:52:10,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:52:10,599 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 21:52:10,612 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 21:52:10,803 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 21:52:10,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:52:10,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:52:10,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2011236365, now seen corresponding path program 1 times [2024-10-12 21:52:10,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-12 21:52:10,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583659856] [2024-10-12 21:52:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:52:10,805 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 21:52:10,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-12 21:52:10,806 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 21:52:10,807 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