./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_4+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 05:08:46,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 05:08:46,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 05:08:46,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 05:08:46,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 05:08:47,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 05:08:47,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 05:08:47,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 05:08:47,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 05:08:47,014 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 05:08:47,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 05:08:47,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 05:08:47,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 05:08:47,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 05:08:47,018 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 05:08:47,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 05:08:47,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 05:08:47,019 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 05:08:47,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 05:08:47,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 05:08:47,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 05:08:47,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 05:08:47,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 05:08:47,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 05:08:47,023 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 05:08:47,023 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 05:08:47,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 05:08:47,024 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 05:08:47,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 05:08:47,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 05:08:47,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 05:08:47,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 05:08:47,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:08:47,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 05:08:47,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 05:08:47,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 05:08:47,027 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 05:08:47,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 05:08:47,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 05:08:47,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 05:08:47,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 05:08:47,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 05:08:47,029 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b [2024-10-11 05:08:47,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 05:08:47,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 05:08:47,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 05:08:47,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 05:08:47,318 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 05:08:47,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c [2024-10-11 05:08:48,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 05:08:49,103 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 05:08:49,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c [2024-10-11 05:08:49,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6302860f2/587f0c29e0ea4b17869424ec98b34058/FLAG295d73604 [2024-10-11 05:08:49,135 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6302860f2/587f0c29e0ea4b17869424ec98b34058 [2024-10-11 05:08:49,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 05:08:49,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 05:08:49,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 05:08:49,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 05:08:49,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 05:08:49,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da9f6be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49, skipping insertion in model container [2024-10-11 05:08:49,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,183 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 05:08:49,386 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_4+soft_float_1-2a.c.cil.c[1999,2012] [2024-10-11 05:08:49,395 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_4+soft_float_1-2a.c.cil.c[2393,2406] [2024-10-11 05:08:49,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:08:49,472 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 05:08:49,484 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_4+soft_float_1-2a.c.cil.c[1999,2012] [2024-10-11 05:08:49,486 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_4+soft_float_1-2a.c.cil.c[2393,2406] [2024-10-11 05:08:49,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:08:49,530 INFO L204 MainTranslator]: Completed translation [2024-10-11 05:08:49,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49 WrapperNode [2024-10-11 05:08:49,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 05:08:49,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 05:08:49,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 05:08:49,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 05:08:49,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,577 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2024-10-11 05:08:49,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 05:08:49,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 05:08:49,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 05:08:49,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 05:08:49,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,624 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]. [2024-10-11 05:08:49,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,638 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 05:08:49,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 05:08:49,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 05:08:49,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 05:08:49,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (1/1) ... [2024-10-11 05:08:49,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:08:49,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:08:49,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 05:08:49,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 05:08:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 05:08:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-11 05:08:49,751 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-11 05:08:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 05:08:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 05:08:49,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 05:08:49,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 05:08:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 05:08:49,837 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 05:08:49,839 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 05:08:50,266 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-10-11 05:08:50,266 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 05:08:50,309 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 05:08:50,309 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 05:08:50,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:08:50 BoogieIcfgContainer [2024-10-11 05:08:50,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 05:08:50,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 05:08:50,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 05:08:50,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 05:08:50,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:08:49" (1/3) ... [2024-10-11 05:08:50,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0e0cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:08:50, skipping insertion in model container [2024-10-11 05:08:50,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:49" (2/3) ... [2024-10-11 05:08:50,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0e0cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:08:50, skipping insertion in model container [2024-10-11 05:08:50,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:08:50" (3/3) ... [2024-10-11 05:08:50,324 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_1-2a.c.cil.c [2024-10-11 05:08:50,344 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 05:08:50,344 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 05:08:50,405 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 05:08:50,414 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;@7ae3745d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 05:08:50,415 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 05:08:50,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 86 states have (on average 1.6162790697674418) internal successors, (139), 90 states have internal predecessors, (139), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-11 05:08:50,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 05:08:50,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:08:50,428 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 05:08:50,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:08:50,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:08:50,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1201248947, now seen corresponding path program 1 times [2024-10-11 05:08:50,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:08:50,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597106915] [2024-10-11 05:08:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:08:50,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:08:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:08:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 05:08:50,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:08:50,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597106915] [2024-10-11 05:08:50,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597106915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:08:50,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:08:50,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 05:08:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369835981] [2024-10-11 05:08:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:08:50,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 05:08:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:08:50,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 05:08:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 05:08:50,606 INFO L87 Difference]: Start difference. First operand has 99 states, 86 states have (on average 1.6162790697674418) internal successors, (139), 90 states have internal predecessors, (139), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2024-10-11 05:08:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:08:50,654 INFO L93 Difference]: Finished difference Result 194 states and 311 transitions. [2024-10-11 05:08:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 05:08:50,656 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 [2024-10-11 05:08:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:08:50,663 INFO L225 Difference]: With dead ends: 194 [2024-10-11 05:08:50,664 INFO L226 Difference]: Without dead ends: 95 [2024-10-11 05:08:50,667 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 [2024-10-11 05:08:50,670 INFO L432 NwaCegarLoop]: 139 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, 139 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 [2024-10-11 05:08:50,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 05:08:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-11 05:08:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-11 05:08:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 86 states have internal predecessors, (124), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-11 05:08:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 139 transitions. [2024-10-11 05:08:50,715 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 139 transitions. Word has length 6 [2024-10-11 05:08:50,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:08:50,716 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 139 transitions. [2024-10-11 05:08:50,716 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) [2024-10-11 05:08:50,716 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 139 transitions. [2024-10-11 05:08:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 05:08:50,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:08:50,717 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 05:08:50,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 05:08:50,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:08:50,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:08:50,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1201189365, now seen corresponding path program 1 times [2024-10-11 05:08:50,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:08:50,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986824424] [2024-10-11 05:08:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:08:50,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:08:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 05:08:50,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 05:08:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 05:08:50,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 05:08:50,761 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 05:08:50,763 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-11 05:08:50,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-11 05:08:50,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 05:08:50,768 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 05:08:50,781 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 05:08:50,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 05:08:50 BoogieIcfgContainer [2024-10-11 05:08:50,785 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 05:08:50,786 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 05:08:50,786 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 05:08:50,786 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 05:08:50,787 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:08:50" (3/4) ... [2024-10-11 05:08:50,789 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-11 05:08:50,790 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 05:08:50,791 INFO L158 Benchmark]: Toolchain (without parser) took 1651.43ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 85.4MB in the beginning and 104.0MB in the end (delta: -18.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2024-10-11 05:08:50,791 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 05:08:50,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.03ms. Allocated memory is still 134.2MB. Free memory was 85.4MB in the beginning and 68.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-11 05:08:50,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.46ms. Allocated memory is still 134.2MB. Free memory was 68.6MB in the beginning and 66.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 05:08:50,793 INFO L158 Benchmark]: Boogie Preprocessor took 72.88ms. Allocated memory is still 134.2MB. Free memory was 66.2MB in the beginning and 63.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 05:08:50,793 INFO L158 Benchmark]: RCFGBuilder took 657.16ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 63.5MB in the beginning and 131.3MB in the end (delta: -67.7MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2024-10-11 05:08:50,794 INFO L158 Benchmark]: TraceAbstraction took 469.48ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 104.0MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-11 05:08:50,794 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 176.2MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 05:08:50,796 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.03ms. Allocated memory is still 134.2MB. Free memory was 85.4MB in the beginning and 68.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.46ms. Allocated memory is still 134.2MB. Free memory was 68.6MB in the beginning and 66.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.88ms. Allocated memory is still 134.2MB. Free memory was 66.2MB in the beginning and 63.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 657.16ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 63.5MB in the beginning and 131.3MB in the end (delta: -67.7MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 469.48ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 104.0MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 176.2MB. Free memory is still 104.0MB. 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: [L403] COND TRUE __VERIFIER_nondet_int() [L404] 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 < 1.39844f) [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 3 procedures, 99 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, 139 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, 139 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=99occurred 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 [2024-10-11 05:08:50,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 05:08:53,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 05:08:53,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-11 05:08:53,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 05:08:53,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 05:08:53,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 05:08:53,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 05:08:53,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 05:08:53,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 05:08:53,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 05:08:53,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 05:08:53,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 05:08:53,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 05:08:53,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 05:08:53,241 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 05:08:53,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 05:08:53,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 05:08:53,242 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 05:08:53,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 05:08:53,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 05:08:53,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 05:08:53,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 05:08:53,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 05:08:53,247 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 05:08:53,248 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 05:08:53,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 05:08:53,248 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 05:08:53,248 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 05:08:53,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 05:08:53,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 05:08:53,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 05:08:53,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 05:08:53,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 05:08:53,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 05:08:53,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:08:53,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 05:08:53,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 05:08:53,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 05:08:53,254 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 05:08:53,254 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 05:08:53,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 05:08:53,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 05:08:53,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 05:08:53,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 05:08:53,255 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 05:08:53,255 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 964037bccd5af2bec8208ce0f4b08447d41303350ff91bfe4b13e42b362dc54b [2024-10-11 05:08:53,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 05:08:53,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 05:08:53,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 05:08:53,647 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 05:08:53,648 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 05:08:53,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c [2024-10-11 05:08:55,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 05:08:55,435 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 05:08:55,436 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_4+soft_float_1-2a.c.cil.c [2024-10-11 05:08:55,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b95248a5f/8763065070a4475992b33e3f52983fe8/FLAG06c3eb926 [2024-10-11 05:08:55,464 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b95248a5f/8763065070a4475992b33e3f52983fe8 [2024-10-11 05:08:55,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 05:08:55,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 05:08:55,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 05:08:55,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 05:08:55,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 05:08:55,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:55,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67760952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55, skipping insertion in model container [2024-10-11 05:08:55,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:55,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 05:08:55,724 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_4+soft_float_1-2a.c.cil.c[1999,2012] [2024-10-11 05:08:55,731 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_4+soft_float_1-2a.c.cil.c[2393,2406] [2024-10-11 05:08:55,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:08:55,816 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 05:08:55,833 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_4+soft_float_1-2a.c.cil.c[1999,2012] [2024-10-11 05:08:55,836 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_4+soft_float_1-2a.c.cil.c[2393,2406] [2024-10-11 05:08:55,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:08:55,900 INFO L204 MainTranslator]: Completed translation [2024-10-11 05:08:55,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55 WrapperNode [2024-10-11 05:08:55,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 05:08:55,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 05:08:55,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 05:08:55,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 05:08:55,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:55,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:55,946 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-10-11 05:08:55,950 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 05:08:55,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 05:08:55,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 05:08:55,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 05:08:55,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:55,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:55,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:55,995 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]. [2024-10-11 05:08:55,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:55,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:56,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:56,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:56,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:56,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:56,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 05:08:56,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 05:08:56,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 05:08:56,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 05:08:56,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (1/1) ... [2024-10-11 05:08:56,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:08:56,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:08:56,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 05:08:56,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 05:08:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 05:08:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 05:08:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-11 05:08:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-11 05:08:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 05:08:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 05:08:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 05:08:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 05:08:56,193 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 05:08:56,196 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 05:09:01,015 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-10-11 05:09:01,016 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 05:09:01,051 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 05:09:01,051 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 05:09:01,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:09:01 BoogieIcfgContainer [2024-10-11 05:09:01,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 05:09:01,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 05:09:01,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 05:09:01,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 05:09:01,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:08:55" (1/3) ... [2024-10-11 05:09:01,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227ca121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:09:01, skipping insertion in model container [2024-10-11 05:09:01,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:08:55" (2/3) ... [2024-10-11 05:09:01,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227ca121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:09:01, skipping insertion in model container [2024-10-11 05:09:01,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:09:01" (3/3) ... [2024-10-11 05:09:01,063 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_1-2a.c.cil.c [2024-10-11 05:09:01,079 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 05:09:01,079 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 05:09:01,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 05:09:01,149 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;@1da804cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 05:09:01,149 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 05:09:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 62 states have (on average 1.6451612903225807) internal successors, (102), 66 states have internal predecessors, (102), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-11 05:09:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 05:09:01,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:09:01,163 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 05:09:01,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:09:01,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:09:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash 693641191, now seen corresponding path program 1 times [2024-10-11 05:09:01,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 05:09:01,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743126300] [2024-10-11 05:09:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:09:01,187 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 [2024-10-11 05:09:01,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 05:09:01,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/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) [2024-10-11 05:09:01,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 05:09:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:09:01,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-11 05:09:01,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:09:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 05:09:01,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 05:09:01,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 05:09:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743126300] [2024-10-11 05:09:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743126300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:09:01,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:09:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 05:09:01,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755367303] [2024-10-11 05:09:01,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:09:01,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 05:09:01,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 05:09:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 05:09:01,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 05:09:01,632 INFO L87 Difference]: Start difference. First operand has 75 states, 62 states have (on average 1.6451612903225807) internal successors, (102), 66 states have internal predecessors, (102), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2024-10-11 05:09:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:09:01,725 INFO L93 Difference]: Finished difference Result 146 states and 237 transitions. [2024-10-11 05:09:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 05:09:01,727 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 [2024-10-11 05:09:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:09:01,754 INFO L225 Difference]: With dead ends: 146 [2024-10-11 05:09:01,755 INFO L226 Difference]: Without dead ends: 71 [2024-10-11 05:09:01,759 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 [2024-10-11 05:09:01,764 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 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, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:09:01,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:09:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-11 05:09:01,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-11 05:09:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 62 states have internal predecessors, (89), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-11 05:09:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2024-10-11 05:09:01,813 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 6 [2024-10-11 05:09:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:09:01,813 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2024-10-11 05:09:01,814 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) [2024-10-11 05:09:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2024-10-11 05:09:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 05:09:01,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:09:01,815 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 05:09:01,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 05:09:02,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/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 [2024-10-11 05:09:02,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:09:02,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:09:02,019 INFO L85 PathProgramCache]: Analyzing trace with hash 693700773, now seen corresponding path program 1 times [2024-10-11 05:09:02,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 05:09:02,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623725202] [2024-10-11 05:09:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:09:02,021 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 [2024-10-11 05:09:02,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 05:09:02,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/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) [2024-10-11 05:09:02,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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