./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.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_6+soft_float_1-3a.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 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 05:10:42,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 05:10:42,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 05:10:42,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 05:10:42,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 05:10:42,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 05:10:42,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 05:10:42,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 05:10:42,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 05:10:42,474 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 05:10:42,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 05:10:42,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 05:10:42,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 05:10:42,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 05:10:42,478 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 05:10:42,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 05:10:42,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 05:10:42,479 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 05:10:42,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 05:10:42,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 05:10:42,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 05:10:42,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 05:10:42,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 05:10:42,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 05:10:42,483 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 05:10:42,483 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 05:10:42,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 05:10:42,484 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 05:10:42,484 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 05:10:42,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 05:10:42,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 05:10:42,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 05:10:42,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:10:42,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 05:10:42,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 05:10:42,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 05:10:42,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 05:10:42,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 05:10:42,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 05:10:42,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 05:10:42,488 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 05:10:42,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 05:10:42,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2024-10-11 05:10:42,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 05:10:42,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 05:10:42,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 05:10:42,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 05:10:42,765 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 05:10:42,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2024-10-11 05:10:44,173 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 05:10:44,387 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 05:10:44,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2024-10-11 05:10:44,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d1d2511db/7502e18001c846fcbde8eb2aadbdac33/FLAGa963267ba [2024-10-11 05:10:44,751 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d1d2511db/7502e18001c846fcbde8eb2aadbdac33 [2024-10-11 05:10:44,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 05:10:44,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 05:10:44,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 05:10:44,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 05:10:44,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 05:10:44,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:10:44" (1/1) ... [2024-10-11 05:10:44,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2724e57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:44, skipping insertion in model container [2024-10-11 05:10:44,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:10:44" (1/1) ... [2024-10-11 05:10:44,801 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 05:10:44,993 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2024-10-11 05:10:45,000 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2024-10-11 05:10:45,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:10:45,087 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 05:10:45,104 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2024-10-11 05:10:45,110 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2024-10-11 05:10:45,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:10:45,172 INFO L204 MainTranslator]: Completed translation [2024-10-11 05:10:45,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45 WrapperNode [2024-10-11 05:10:45,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 05:10:45,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 05:10:45,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 05:10:45,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 05:10:45,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,218 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 210 [2024-10-11 05:10:45,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 05:10:45,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 05:10:45,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 05:10:45,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 05:10:45,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,297 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 05:10:45,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 05:10:45,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 05:10:45,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 05:10:45,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 05:10:45,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (1/1) ... [2024-10-11 05:10:45,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:10:45,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:10:45,384 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 05:10:45,388 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 05:10:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 05:10:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-11 05:10:45,438 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-11 05:10:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 05:10:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 05:10:45,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 05:10:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 05:10:45,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 05:10:45,515 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 05:10:45,517 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 05:10:45,878 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-10-11 05:10:45,878 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 05:10:45,907 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 05:10:45,907 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 05:10:45,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:45 BoogieIcfgContainer [2024-10-11 05:10:45,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 05:10:45,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 05:10:45,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 05:10:45,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 05:10:45,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:10:44" (1/3) ... [2024-10-11 05:10:45,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345a5f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:10:45, skipping insertion in model container [2024-10-11 05:10:45,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:45" (2/3) ... [2024-10-11 05:10:45,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345a5f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:10:45, skipping insertion in model container [2024-10-11 05:10:45,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:45" (3/3) ... [2024-10-11 05:10:45,918 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2024-10-11 05:10:45,936 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 05:10:45,936 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 05:10:45,990 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 05:10:45,997 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;@19d7c18b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 05:10:45,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 05:10:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 85 states have (on average 1.611764705882353) internal successors, (137), 89 states have internal predecessors, (137), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 05:10:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 05:10:46,008 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:10:46,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 05:10:46,009 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:10:46,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:10:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1287136400, now seen corresponding path program 1 times [2024-10-11 05:10:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:10:46,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762521816] [2024-10-11 05:10:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:10:46,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:10:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:10:46,142 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 05:10:46,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:10:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762521816] [2024-10-11 05:10:46,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762521816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:10:46,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:10:46,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 05:10:46,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910156794] [2024-10-11 05:10:46,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:10:46,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 05:10:46,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:10:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 05:10:46,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 05:10:46,175 INFO L87 Difference]: Start difference. First operand has 99 states, 85 states have (on average 1.611764705882353) internal successors, (137), 89 states have internal predecessors, (137), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:10:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:10:46,226 INFO L93 Difference]: Finished difference Result 194 states and 312 transitions. [2024-10-11 05:10:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 05:10:46,228 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 05:10:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:10:46,235 INFO L225 Difference]: With dead ends: 194 [2024-10-11 05:10:46,235 INFO L226 Difference]: Without dead ends: 95 [2024-10-11 05:10:46,238 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 05:10:46,241 INFO L432 NwaCegarLoop]: 140 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, 140 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 05:10:46,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 05:10:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-11 05:10:46,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-11 05:10:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 82 states have (on average 1.5) internal successors, (123), 85 states have internal predecessors, (123), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-11 05:10:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 140 transitions. [2024-10-11 05:10:46,281 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 140 transitions. Word has length 6 [2024-10-11 05:10:46,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:10:46,282 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 140 transitions. [2024-10-11 05:10:46,282 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 05:10:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 140 transitions. [2024-10-11 05:10:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 05:10:46,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:10:46,283 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 05:10:46,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 05:10:46,283 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:10:46,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:10:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1287076818, now seen corresponding path program 1 times [2024-10-11 05:10:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:10:46,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562435747] [2024-10-11 05:10:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:10:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:10:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 05:10:46,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 05:10:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 05:10:46,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 05:10:46,338 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 05:10:46,339 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-11 05:10:46,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-11 05:10:46,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 05:10:46,345 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 05:10:46,358 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 05:10:46,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 05:10:46 BoogieIcfgContainer [2024-10-11 05:10:46,364 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 05:10:46,365 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 05:10:46,365 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 05:10:46,365 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 05:10:46,365 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:45" (3/4) ... [2024-10-11 05:10:46,367 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-11 05:10:46,368 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 05:10:46,369 INFO L158 Benchmark]: Toolchain (without parser) took 1613.76ms. Allocated memory is still 184.5MB. Free memory was 115.1MB in the beginning and 101.4MB in the end (delta: 13.8MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-10-11 05:10:46,369 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 184.5MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 05:10:46,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.03ms. Allocated memory is still 184.5MB. Free memory was 114.9MB in the beginning and 98.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-11 05:10:46,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.07ms. Allocated memory is still 184.5MB. Free memory was 98.3MB in the beginning and 95.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 05:10:46,370 INFO L158 Benchmark]: Boogie Preprocessor took 101.85ms. Allocated memory is still 184.5MB. Free memory was 95.8MB in the beginning and 154.7MB in the end (delta: -58.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2024-10-11 05:10:46,371 INFO L158 Benchmark]: RCFGBuilder took 586.82ms. Allocated memory is still 184.5MB. Free memory was 154.7MB in the beginning and 128.6MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-11 05:10:46,371 INFO L158 Benchmark]: TraceAbstraction took 453.94ms. Allocated memory is still 184.5MB. Free memory was 127.5MB in the beginning and 101.4MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-11 05:10:46,372 INFO L158 Benchmark]: Witness Printer took 3.80ms. Allocated memory is still 184.5MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 05:10:46,374 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 184.5MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.03ms. Allocated memory is still 184.5MB. Free memory was 114.9MB in the beginning and 98.3MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.07ms. Allocated memory is still 184.5MB. Free memory was 98.3MB in the beginning and 95.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 101.85ms. Allocated memory is still 184.5MB. Free memory was 95.8MB in the beginning and 154.7MB in the end (delta: -58.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * RCFGBuilder took 586.82ms. Allocated memory is still 184.5MB. Free memory was 154.7MB in the beginning and 128.6MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 453.94ms. Allocated memory is still 184.5MB. Free memory was 127.5MB in the beginning and 101.4MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.80ms. Allocated memory is still 184.5MB. Free memory is still 101.4MB. 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.399f) [L48] reach_error() - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 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, 140 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, 140 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 05:10:46,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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-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_6+soft_float_1-3a.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 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 05:10:48,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 05:10:48,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-11 05:10:48,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 05:10:48,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 05:10:48,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 05:10:48,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 05:10:48,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 05:10:48,715 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 05:10:48,715 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 05:10:48,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 05:10:48,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 05:10:48,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 05:10:48,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 05:10:48,721 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 05:10:48,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 05:10:48,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 05:10:48,722 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 05:10:48,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 05:10:48,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 05:10:48,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 05:10:48,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 05:10:48,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 05:10:48,725 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 05:10:48,725 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 05:10:48,725 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 05:10:48,725 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 05:10:48,725 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 05:10:48,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 05:10:48,726 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 05:10:48,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 05:10:48,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 05:10:48,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 05:10:48,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 05:10:48,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:10:48,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 05:10:48,730 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 05:10:48,730 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 05:10:48,730 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 05:10:48,730 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 05:10:48,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 05:10:48,731 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 05:10:48,731 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 05:10:48,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 05:10:48,732 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 05:10:48,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2024-10-11 05:10:49,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 05:10:49,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 05:10:49,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 05:10:49,086 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 05:10:49,087 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 05:10:49,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2024-10-11 05:10:50,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 05:10:50,827 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 05:10:50,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2024-10-11 05:10:50,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0f210ea3c/8f17cb4c566b4320b08e8f6a352906b6/FLAG79d7dd29b [2024-10-11 05:10:51,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0f210ea3c/8f17cb4c566b4320b08e8f6a352906b6 [2024-10-11 05:10:51,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 05:10:51,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 05:10:51,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 05:10:51,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 05:10:51,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 05:10:51,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7213355c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51, skipping insertion in model container [2024-10-11 05:10:51,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 05:10:51,421 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2024-10-11 05:10:51,429 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2024-10-11 05:10:51,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:10:51,511 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 05:10:51,529 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2024-10-11 05:10:51,534 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2024-10-11 05:10:51,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:10:51,595 INFO L204 MainTranslator]: Completed translation [2024-10-11 05:10:51,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51 WrapperNode [2024-10-11 05:10:51,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 05:10:51,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 05:10:51,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 05:10:51,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 05:10:51,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,643 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 167 [2024-10-11 05:10:51,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 05:10:51,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 05:10:51,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 05:10:51,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 05:10:51,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,696 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 05:10:51,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 05:10:51,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 05:10:51,734 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 05:10:51,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 05:10:51,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (1/1) ... [2024-10-11 05:10:51,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:10:51,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:10:51,769 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 05:10:51,775 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 05:10:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 05:10:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 05:10:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-11 05:10:51,823 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-11 05:10:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 05:10:51,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 05:10:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 05:10:51,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 05:10:51,927 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 05:10:51,929 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 05:10:56,727 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-10-11 05:10:56,727 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 05:10:56,749 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 05:10:56,750 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 05:10:56,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:56 BoogieIcfgContainer [2024-10-11 05:10:56,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 05:10:56,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 05:10:56,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 05:10:56,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 05:10:56,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:10:51" (1/3) ... [2024-10-11 05:10:56,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cd51bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:10:56, skipping insertion in model container [2024-10-11 05:10:56,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:10:51" (2/3) ... [2024-10-11 05:10:56,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cd51bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:10:56, skipping insertion in model container [2024-10-11 05:10:56,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:10:56" (3/3) ... [2024-10-11 05:10:56,758 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2024-10-11 05:10:56,772 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 05:10:56,772 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 05:10:56,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 05:10:56,829 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;@72e867ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 05:10:56,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 05:10:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 61 states have (on average 1.639344262295082) internal successors, (100), 65 states have internal predecessors, (100), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 05:10:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 05:10:56,842 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:10:56,843 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 05:10:56,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:10:56,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:10:56,852 INFO L85 PathProgramCache]: Analyzing trace with hash 607753738, now seen corresponding path program 1 times [2024-10-11 05:10:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 05:10:56,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826602843] [2024-10-11 05:10:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:10:56,887 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 05:10:56,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 05:10:56,890 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 05:10:56,892 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 05:10:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:10:57,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-11 05:10:57,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 05:10:57,286 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 05:10:57,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 05:10:57,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 05:10:57,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826602843] [2024-10-11 05:10:57,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826602843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:10:57,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:10:57,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 05:10:57,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772572794] [2024-10-11 05:10:57,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:10:57,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 05:10:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 05:10:57,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 05:10:57,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 05:10:57,316 INFO L87 Difference]: Start difference. First operand has 75 states, 61 states have (on average 1.639344262295082) internal successors, (100), 65 states have internal predecessors, (100), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:10:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:10:57,409 INFO L93 Difference]: Finished difference Result 146 states and 238 transitions. [2024-10-11 05:10:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 05:10:57,411 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 05:10:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:10:57,419 INFO L225 Difference]: With dead ends: 146 [2024-10-11 05:10:57,419 INFO L226 Difference]: Without dead ends: 71 [2024-10-11 05:10:57,422 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 05:10:57,425 INFO L432 NwaCegarLoop]: 105 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, 105 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:10:57,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:10:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-11 05:10:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-11 05:10:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 58 states have (on average 1.5172413793103448) internal successors, (88), 61 states have internal predecessors, (88), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-11 05:10:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2024-10-11 05:10:57,473 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 6 [2024-10-11 05:10:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:10:57,473 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2024-10-11 05:10:57,474 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 05:10:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2024-10-11 05:10:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 05:10:57,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:10:57,476 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 05:10:57,493 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 05:10:57,677 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 05:10:57,678 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:10:57,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:10:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash 607813320, now seen corresponding path program 1 times [2024-10-11 05:10:57,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 05:10:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415882118] [2024-10-11 05:10:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:10:57,682 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 05:10:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 05:10:57,685 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 05:10:57,687 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