./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 61a67961 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-wip.fs.cvc5-61a6796-m [2024-10-14 05:17:28,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 05:17:28,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 05:17:28,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 05:17:28,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 05:17:28,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 05:17:28,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 05:17:28,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 05:17:28,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 05:17:28,510 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 05:17:28,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 05:17:28,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 05:17:28,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 05:17:28,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 05:17:28,516 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 05:17:28,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 05:17:28,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 05:17:28,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 05:17:28,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 05:17:28,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 05:17:28,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 05:17:28,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 05:17:28,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 05:17:28,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 05:17:28,520 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 05:17:28,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 05:17:28,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 05:17:28,521 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 05:17:28,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 05:17:28,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 05:17:28,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 05:17:28,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 05:17:28,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 05:17:28,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 05:17:28,522 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 05:17:28,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 05:17:28,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 05:17:28,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 05:17:28,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 05:17:28,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 05:17:28,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 05:17:28,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 05:17:28,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2024-10-14 05:17:28,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 05:17:28,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 05:17:28,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 05:17:28,819 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 05:17:28,820 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 05:17:28,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2024-10-14 05:17:30,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 05:17:30,497 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 05:17:30,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2024-10-14 05:17:30,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97c1c9559/a8ee6473a98a405eb6cac59153a2aa16/FLAGb2bd731cb [2024-10-14 05:17:30,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97c1c9559/a8ee6473a98a405eb6cac59153a2aa16 [2024-10-14 05:17:30,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 05:17:30,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 05:17:30,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 05:17:30,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 05:17:30,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 05:17:30,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:17:30" (1/1) ... [2024-10-14 05:17:30,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190de1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:30, skipping insertion in model container [2024-10-14 05:17:30,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:17:30" (1/1) ... [2024-10-14 05:17:30,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 05:17:31,061 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] [2024-10-14 05:17:31,068 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] [2024-10-14 05:17:31,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 05:17:31,126 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 05:17:31,143 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] [2024-10-14 05:17:31,149 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] [2024-10-14 05:17:31,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 05:17:31,223 INFO L204 MainTranslator]: Completed translation [2024-10-14 05:17:31,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31 WrapperNode [2024-10-14 05:17:31,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 05:17:31,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 05:17:31,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 05:17:31,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 05:17:31,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,278 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-10-14 05:17:31,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 05:17:31,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 05:17:31,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 05:17:31,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 05:17:31,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,293 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,321 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]. [2024-10-14 05:17:31,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 05:17:31,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 05:17:31,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 05:17:31,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 05:17:31,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (1/1) ... [2024-10-14 05:17:31,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 05:17:31,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 05:17:31,386 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) [2024-10-14 05:17:31,392 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 [2024-10-14 05:17:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 05:17:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-14 05:17:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-14 05:17:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-10-14 05:17:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-10-14 05:17:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 05:17:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 05:17:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 05:17:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 05:17:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 05:17:31,516 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 05:17:31,519 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 05:17:31,892 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-10-14 05:17:31,892 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 05:17:31,919 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 05:17:31,919 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 05:17:31,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:31 BoogieIcfgContainer [2024-10-14 05:17:31,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 05:17:31,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 05:17:31,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 05:17:31,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 05:17:31,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:17:30" (1/3) ... [2024-10-14 05:17:31,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c99ca32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:17:31, skipping insertion in model container [2024-10-14 05:17:31,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:31" (2/3) ... [2024-10-14 05:17:31,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c99ca32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:17:31, skipping insertion in model container [2024-10-14 05:17:31,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:31" (3/3) ... [2024-10-14 05:17:31,930 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2024-10-14 05:17:31,954 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 05:17:31,954 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 05:17:32,003 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 05:17:32,011 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;@27492d31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 05:17:32,011 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 05:17:32,022 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) [2024-10-14 05:17:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 05:17:32,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 05:17:32,035 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 05:17:32,036 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 05:17:32,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 05:17:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash 202174098, now seen corresponding path program 1 times [2024-10-14 05:17:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 05:17:32,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037521980] [2024-10-14 05:17:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 05:17:32,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 05:17:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 05:17:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 05:17:32,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 05:17:32,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037521980] [2024-10-14 05:17:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037521980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 05:17:32,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 05:17:32,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 05:17:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581405069] [2024-10-14 05:17:32,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 05:17:32,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 05:17:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 05:17:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 05:17:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 05:17:32,196 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) [2024-10-14 05:17:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 05:17:32,243 INFO L93 Difference]: Finished difference Result 158 states and 241 transitions. [2024-10-14 05:17:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 05:17:32,246 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 [2024-10-14 05:17:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 05:17:32,252 INFO L225 Difference]: With dead ends: 158 [2024-10-14 05:17:32,253 INFO L226 Difference]: Without dead ends: 77 [2024-10-14 05:17:32,256 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 [2024-10-14 05:17:32,259 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 [2024-10-14 05:17:32,260 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] [2024-10-14 05:17:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-14 05:17:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-14 05:17:32,292 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) [2024-10-14 05:17:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2024-10-14 05:17:32,296 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 6 [2024-10-14 05:17:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 05:17:32,296 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2024-10-14 05:17:32,297 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) [2024-10-14 05:17:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2024-10-14 05:17:32,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 05:17:32,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 05:17:32,298 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 05:17:32,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 05:17:32,299 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 05:17:32,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 05:17:32,299 INFO L85 PathProgramCache]: Analyzing trace with hash 202233680, now seen corresponding path program 1 times [2024-10-14 05:17:32,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 05:17:32,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440487151] [2024-10-14 05:17:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 05:17:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 05:17:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 05:17:32,312 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 05:17:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 05:17:32,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 05:17:32,338 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 05:17:32,340 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-14 05:17:32,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-14 05:17:32,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 05:17:32,345 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 05:17:32,356 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 05:17:32,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:17:32 BoogieIcfgContainer [2024-10-14 05:17:32,360 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 05:17:32,360 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 05:17:32,361 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 05:17:32,361 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 05:17:32,361 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:31" (3/4) ... [2024-10-14 05:17:32,363 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-14 05:17:32,364 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 05:17:32,364 INFO L158 Benchmark]: Toolchain (without parser) took 1493.19ms. Allocated memory was 151.0MB in the beginning and 230.7MB in the end (delta: 79.7MB). Free memory was 92.9MB in the beginning and 165.0MB in the end (delta: -72.2MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2024-10-14 05:17:32,365 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 05:17:32,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.94ms. Allocated memory is still 151.0MB. Free memory was 92.5MB in the beginning and 77.7MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-14 05:17:32,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.64ms. Allocated memory is still 151.0MB. Free memory was 77.7MB in the beginning and 75.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 05:17:32,366 INFO L158 Benchmark]: Boogie Preprocessor took 67.02ms. Allocated memory is still 151.0MB. Free memory was 75.7MB in the beginning and 73.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 05:17:32,366 INFO L158 Benchmark]: RCFGBuilder took 569.22ms. Allocated memory was 151.0MB in the beginning and 230.7MB in the end (delta: 79.7MB). Free memory was 73.3MB in the beginning and 192.1MB in the end (delta: -118.8MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2024-10-14 05:17:32,367 INFO L158 Benchmark]: TraceAbstraction took 437.50ms. Allocated memory is still 230.7MB. Free memory was 191.2MB in the beginning and 166.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-14 05:17:32,367 INFO L158 Benchmark]: Witness Printer took 3.17ms. Allocated memory is still 230.7MB. Free memory is still 165.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 05:17:32,369 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.94ms. Allocated memory is still 151.0MB. Free memory was 92.5MB in the beginning and 77.7MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.64ms. Allocated memory is still 151.0MB. Free memory was 77.7MB in the beginning and 75.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.02ms. Allocated memory is still 151.0MB. Free memory was 75.7MB in the beginning and 73.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 569.22ms. Allocated memory was 151.0MB in the beginning and 230.7MB in the end (delta: 79.7MB). Free memory was 73.3MB in the beginning and 192.1MB in the end (delta: -118.8MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 437.50ms. Allocated memory is still 230.7MB. Free memory was 191.2MB in the beginning and 166.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.17ms. Allocated memory is still 230.7MB. Free memory is still 165.0MB. 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 [2024-10-14 05:17:32,402 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_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-wip.fs.cvc5-61a6796-m [2024-10-14 05:17:34,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 05:17:34,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-14 05:17:34,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 05:17:34,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 05:17:34,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 05:17:34,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 05:17:34,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 05:17:34,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 05:17:34,738 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 05:17:34,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 05:17:34,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 05:17:34,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 05:17:34,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 05:17:34,742 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 05:17:34,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 05:17:34,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 05:17:34,743 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 05:17:34,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 05:17:34,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 05:17:34,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 05:17:34,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 05:17:34,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 05:17:34,748 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 05:17:34,748 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 05:17:34,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 05:17:34,748 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 05:17:34,749 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 05:17:34,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 05:17:34,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 05:17:34,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 05:17:34,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 05:17:34,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 05:17:34,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 05:17:34,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 05:17:34,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 05:17:34,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 05:17:34,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 05:17:34,754 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 05:17:34,754 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 05:17:34,754 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 05:17:34,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 05:17:34,755 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 05:17:34,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 05:17:34,755 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 05:17:34,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2024-10-14 05:17:35,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 05:17:35,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 05:17:35,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 05:17:35,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 05:17:35,125 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 05:17:35,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2024-10-14 05:17:36,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 05:17:36,900 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 05:17:36,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2024-10-14 05:17:36,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0098d5905/24658962689741c98bdd0c667d86497e/FLAG04a2400e7 [2024-10-14 05:17:36,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0098d5905/24658962689741c98bdd0c667d86497e [2024-10-14 05:17:36,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 05:17:36,937 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 05:17:36,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 05:17:36,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 05:17:36,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 05:17:36,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:17:36" (1/1) ... [2024-10-14 05:17:36,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d944b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:36, skipping insertion in model container [2024-10-14 05:17:36,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:17:36" (1/1) ... [2024-10-14 05:17:36,982 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 05:17:37,182 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] [2024-10-14 05:17:37,195 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] [2024-10-14 05:17:37,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 05:17:37,249 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 05:17:37,268 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] [2024-10-14 05:17:37,271 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] [2024-10-14 05:17:37,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 05:17:37,330 INFO L204 MainTranslator]: Completed translation [2024-10-14 05:17:37,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37 WrapperNode [2024-10-14 05:17:37,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 05:17:37,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 05:17:37,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 05:17:37,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 05:17:37,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,380 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-10-14 05:17:37,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 05:17:37,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 05:17:37,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 05:17:37,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 05:17:37,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,427 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]. [2024-10-14 05:17:37,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 05:17:37,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 05:17:37,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 05:17:37,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 05:17:37,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (1/1) ... [2024-10-14 05:17:37,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 05:17:37,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 05:17:37,495 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) [2024-10-14 05:17:37,498 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 [2024-10-14 05:17:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 05:17:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 05:17:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-14 05:17:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-14 05:17:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-10-14 05:17:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-10-14 05:17:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 05:17:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 05:17:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 05:17:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 05:17:37,618 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 05:17:37,620 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 05:17:42,292 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-10-14 05:17:42,292 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 05:17:42,312 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 05:17:42,312 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 05:17:42,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:42 BoogieIcfgContainer [2024-10-14 05:17:42,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 05:17:42,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 05:17:42,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 05:17:42,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 05:17:42,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:17:36" (1/3) ... [2024-10-14 05:17:42,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7434940d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:17:42, skipping insertion in model container [2024-10-14 05:17:42,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:17:37" (2/3) ... [2024-10-14 05:17:42,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7434940d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:17:42, skipping insertion in model container [2024-10-14 05:17:42,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:17:42" (3/3) ... [2024-10-14 05:17:42,320 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2024-10-14 05:17:42,333 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 05:17:42,333 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 05:17:42,391 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 05:17:42,399 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;@6da180b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 05:17:42,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 05:17:42,404 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) [2024-10-14 05:17:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 05:17:42,410 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 05:17:42,411 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 05:17:42,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 05:17:42,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 05:17:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2097064236, now seen corresponding path program 1 times [2024-10-14 05:17:42,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 05:17:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083558464] [2024-10-14 05:17:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 05:17:42,430 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 [2024-10-14 05:17:42,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 05:17:42,433 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) [2024-10-14 05:17:42,434 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 [2024-10-14 05:17:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 05:17:42,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-14 05:17:42,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 05:17:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 05:17:42,838 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 05:17:42,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 05:17:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083558464] [2024-10-14 05:17:42,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083558464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 05:17:42,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 05:17:42,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 05:17:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396541083] [2024-10-14 05:17:42,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 05:17:42,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 05:17:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 05:17:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 05:17:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 05:17:42,867 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) [2024-10-14 05:17:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 05:17:42,957 INFO L93 Difference]: Finished difference Result 110 states and 167 transitions. [2024-10-14 05:17:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 05:17:42,960 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 [2024-10-14 05:17:42,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 05:17:42,966 INFO L225 Difference]: With dead ends: 110 [2024-10-14 05:17:42,966 INFO L226 Difference]: Without dead ends: 53 [2024-10-14 05:17:42,969 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 [2024-10-14 05:17:42,972 INFO L432 NwaCegarLoop]: 69 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, 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 [2024-10-14 05:17:42,973 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] [2024-10-14 05:17:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-14 05:17:43,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-14 05:17:43,009 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) [2024-10-14 05:17:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2024-10-14 05:17:43,015 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 6 [2024-10-14 05:17:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 05:17:43,016 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2024-10-14 05:17:43,017 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) [2024-10-14 05:17:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2024-10-14 05:17:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 05:17:43,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 05:17:43,020 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 05:17:43,039 INFO L540 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)] Forceful destruction successful, exit code 0 [2024-10-14 05:17:43,220 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 [2024-10-14 05:17:43,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 05:17:43,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 05:17:43,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2097123818, now seen corresponding path program 1 times [2024-10-14 05:17:43,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 05:17:43,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295180164] [2024-10-14 05:17:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 05:17:43,225 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 [2024-10-14 05:17:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 05:17:43,228 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) [2024-10-14 05:17:43,229 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 [2024-10-14 05:18:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 05:18:52,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.