./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c4cbc544f6c6468ca141cfd9a471f76e948b2a9f8c6c56806d9220760159bde9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:08:29,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:08:29,826 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:08:29,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:08:29,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:08:29,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:08:29,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:08:29,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:08:29,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:08:29,863 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:08:29,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:08:29,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:08:29,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:08:29,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:08:29,866 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:08:29,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:08:29,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:08:29,867 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:08:29,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:08:29,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:08:29,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:08:29,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:08:29,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:08:29,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:08:29,871 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:08:29,871 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:08:29,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:08:29,872 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:08:29,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:08:29,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:08:29,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:08:29,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:08:29,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:08:29,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:08:29,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:08:29,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:08:29,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:08:29,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:08:29,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:08:29,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:08:29,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:08:29,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:08:29,876 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4cbc544f6c6468ca141cfd9a471f76e948b2a9f8c6c56806d9220760159bde9 [2024-10-24 01:08:30,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:08:30,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:08:30,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:08:30,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:08:30,203 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:08:30,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c [2024-10-24 01:08:31,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:08:31,768 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:08:31,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c [2024-10-24 01:08:31,776 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47554bace/a048f608a6b54e71b026397b7f2024c5/FLAG278cf594e [2024-10-24 01:08:32,169 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47554bace/a048f608a6b54e71b026397b7f2024c5 [2024-10-24 01:08:32,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:08:32,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:08:32,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:08:32,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:08:32,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:08:32,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12eae583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32, skipping insertion in model container [2024-10-24 01:08:32,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:08:32,392 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/recursified_loop-invariants/recursified_bin-suffix-5.c[986,999] [2024-10-24 01:08:32,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:08:32,410 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:08:32,419 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/recursified_loop-invariants/recursified_bin-suffix-5.c[986,999] [2024-10-24 01:08:32,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:08:32,435 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:08:32,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32 WrapperNode [2024-10-24 01:08:32,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:08:32,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:08:32,437 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:08:32,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:08:32,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,465 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-10-24 01:08:32,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:08:32,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:08:32,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:08:32,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:08:32,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,492 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 1 writes are split as follows [0, 1]. [2024-10-24 01:08:32,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:08:32,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:08:32,506 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:08:32,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:08:32,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (1/1) ... [2024-10-24 01:08:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:08:32,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:08:32,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 01:08:32,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 01:08:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:08:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_14_0 [2024-10-24 01:08:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_14_0 [2024-10-24 01:08:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:08:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 01:08:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 01:08:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 01:08:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 01:08:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:08:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:08:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 01:08:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 01:08:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 01:08:32,697 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:08:32,702 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:08:32,900 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-24 01:08:32,900 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:08:32,932 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:08:32,934 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:08:32,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:08:32 BoogieIcfgContainer [2024-10-24 01:08:32,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:08:32,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:08:32,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:08:32,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:08:32,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:08:32" (1/3) ... [2024-10-24 01:08:32,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fddef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:08:32, skipping insertion in model container [2024-10-24 01:08:32,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:32" (2/3) ... [2024-10-24 01:08:32,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fddef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:08:32, skipping insertion in model container [2024-10-24 01:08:32,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:08:32" (3/3) ... [2024-10-24 01:08:32,945 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_bin-suffix-5.c [2024-10-24 01:08:32,961 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:08:32,961 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:08:33,020 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:08:33,030 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;@70211915, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:08:33,030 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:08:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 01:08:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-24 01:08:33,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:08:33,044 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:08:33,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:08:33,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:08:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash 862765969, now seen corresponding path program 1 times [2024-10-24 01:08:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:08:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405810473] [2024-10-24 01:08:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:08:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:08:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:33,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:08:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:08:33,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:08:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405810473] [2024-10-24 01:08:33,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405810473] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:08:33,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:08:33,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:08:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93858175] [2024-10-24 01:08:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:08:33,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:08:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:08:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:08:33,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:08:33,505 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 01:08:33,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:08:33,572 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2024-10-24 01:08:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:08:33,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-10-24 01:08:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:08:33,581 INFO L225 Difference]: With dead ends: 29 [2024-10-24 01:08:33,581 INFO L226 Difference]: Without dead ends: 20 [2024-10-24 01:08:33,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:08:33,587 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:08:33,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:08:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-24 01:08:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-24 01:08:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 01:08:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-24 01:08:33,619 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2024-10-24 01:08:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:08:33,620 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-24 01:08:33,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 01:08:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-24 01:08:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-24 01:08:33,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:08:33,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:08:33,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:08:33,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:08:33,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:08:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash 977636436, now seen corresponding path program 1 times [2024-10-24 01:08:33,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:08:33,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676381251] [2024-10-24 01:08:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:08:33,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:08:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:34,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:08:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:08:34,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:08:34,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676381251] [2024-10-24 01:08:34,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676381251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:08:34,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:08:34,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:08:34,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665903427] [2024-10-24 01:08:34,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:08:34,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:08:34,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:08:34,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:08:34,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:08:34,038 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 01:08:34,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:08:34,105 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-10-24 01:08:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:08:34,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-24 01:08:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:08:34,107 INFO L225 Difference]: With dead ends: 24 [2024-10-24 01:08:34,107 INFO L226 Difference]: Without dead ends: 17 [2024-10-24 01:08:34,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:08:34,109 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:08:34,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:08:34,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-24 01:08:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-24 01:08:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 01:08:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-10-24 01:08:34,118 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2024-10-24 01:08:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:08:34,119 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-10-24 01:08:34,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 01:08:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-10-24 01:08:34,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-24 01:08:34,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:08:34,120 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:08:34,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:08:34,121 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:08:34,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:08:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1368035877, now seen corresponding path program 1 times [2024-10-24 01:08:34,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:08:34,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185949692] [2024-10-24 01:08:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:08:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:08:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:34,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:08:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:34,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 01:08:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 01:08:34,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:08:34,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185949692] [2024-10-24 01:08:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185949692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:08:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430263982] [2024-10-24 01:08:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:08:34,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:08:34,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:08:34,701 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:08:34,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:08:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:34,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 01:08:34,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:08:34,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 01:08:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 01:08:34,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:08:35,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 01:08:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:08:35,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430263982] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:08:35,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:08:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-24 01:08:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178308653] [2024-10-24 01:08:35,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:08:35,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 01:08:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:08:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 01:08:35,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-24 01:08:35,358 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 01:08:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:08:35,578 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-10-24 01:08:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 01:08:35,579 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 16 [2024-10-24 01:08:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:08:35,580 INFO L225 Difference]: With dead ends: 31 [2024-10-24 01:08:35,580 INFO L226 Difference]: Without dead ends: 25 [2024-10-24 01:08:35,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-10-24 01:08:35,581 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:08:35,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 82 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:08:35,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-24 01:08:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-10-24 01:08:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 01:08:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-24 01:08:35,593 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2024-10-24 01:08:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:08:35,593 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-24 01:08:35,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 01:08:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-24 01:08:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 01:08:35,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:08:35,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:08:35,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:08:35,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:08:35,801 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:08:35,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:08:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1364630643, now seen corresponding path program 2 times [2024-10-24 01:08:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:08:35,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021646579] [2024-10-24 01:08:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:08:35,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:08:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:36,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 01:08:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:36,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 01:08:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:36,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 01:08:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 01:08:36,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:08:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021646579] [2024-10-24 01:08:36,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021646579] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:08:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000557017] [2024-10-24 01:08:36,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 01:08:36,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:08:36,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:08:36,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:08:36,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:08:36,481 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 01:08:36,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 01:08:36,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-24 01:08:36,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:08:36,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 01:08:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:08:36,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:08:37,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 01:08:37,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000557017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:08:37,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 01:08:37,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2024-10-24 01:08:37,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515288721] [2024-10-24 01:08:37,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 01:08:37,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 01:08:37,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:08:37,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 01:08:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-10-24 01:08:37,184 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 01:08:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:08:37,376 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-10-24 01:08:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 01:08:37,377 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 21 [2024-10-24 01:08:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:08:37,378 INFO L225 Difference]: With dead ends: 34 [2024-10-24 01:08:37,379 INFO L226 Difference]: Without dead ends: 30 [2024-10-24 01:08:37,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2024-10-24 01:08:37,381 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:08:37,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 143 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:08:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-24 01:08:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2024-10-24 01:08:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 01:08:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-10-24 01:08:37,393 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 21 [2024-10-24 01:08:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:08:37,393 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-10-24 01:08:37,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 01:08:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-10-24 01:08:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-24 01:08:37,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:08:37,394 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:08:37,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 01:08:37,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-24 01:08:37,600 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:08:37,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:08:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 476820130, now seen corresponding path program 1 times [2024-10-24 01:08:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:08:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36871023] [2024-10-24 01:08:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:08:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:08:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 01:08:37,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 01:08:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 01:08:37,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 01:08:37,638 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 01:08:37,639 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 01:08:37,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:08:37,645 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-10-24 01:08:37,670 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 01:08:37,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:08:37 BoogieIcfgContainer [2024-10-24 01:08:37,673 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 01:08:37,674 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 01:08:37,674 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 01:08:37,675 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 01:08:37,675 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:08:32" (3/4) ... [2024-10-24 01:08:37,677 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 01:08:37,678 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 01:08:37,681 INFO L158 Benchmark]: Toolchain (without parser) took 5508.57ms. Allocated memory was 146.8MB in the beginning and 186.6MB in the end (delta: 39.8MB). Free memory was 70.0MB in the beginning and 118.9MB in the end (delta: -49.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 01:08:37,681 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 146.8MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 01:08:37,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.79ms. Allocated memory is still 146.8MB. Free memory was 69.8MB in the beginning and 115.5MB in the end (delta: -45.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-10-24 01:08:37,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.25ms. Allocated memory is still 146.8MB. Free memory was 115.5MB in the beginning and 114.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 01:08:37,682 INFO L158 Benchmark]: Boogie Preprocessor took 37.06ms. Allocated memory is still 146.8MB. Free memory was 114.3MB in the beginning and 112.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 01:08:37,682 INFO L158 Benchmark]: RCFGBuilder took 428.87ms. Allocated memory is still 146.8MB. Free memory was 112.2MB in the beginning and 113.9MB in the end (delta: -1.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-24 01:08:37,683 INFO L158 Benchmark]: TraceAbstraction took 4736.33ms. Allocated memory was 146.8MB in the beginning and 186.6MB in the end (delta: 39.8MB). Free memory was 113.0MB in the beginning and 118.9MB in the end (delta: -6.0MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2024-10-24 01:08:37,683 INFO L158 Benchmark]: Witness Printer took 6.60ms. Allocated memory is still 186.6MB. Free memory was 118.9MB in the beginning and 118.9MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 01:08:37,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 146.8MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.79ms. Allocated memory is still 146.8MB. Free memory was 69.8MB in the beginning and 115.5MB in the end (delta: -45.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.25ms. Allocated memory is still 146.8MB. Free memory was 115.5MB in the beginning and 114.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.06ms. Allocated memory is still 146.8MB. Free memory was 114.3MB in the beginning and 112.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 428.87ms. Allocated memory is still 146.8MB. Free memory was 112.2MB in the beginning and 113.9MB in the end (delta: -1.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4736.33ms. Allocated memory was 146.8MB in the beginning and 186.6MB in the end (delta: 39.8MB). Free memory was 113.0MB in the beginning and 118.9MB in the end (delta: -6.0MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Witness Printer took 6.60ms. Allocated memory is still 186.6MB. Free memory was 118.9MB in the beginning and 118.9MB in the end (delta: 2.6kB). 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: 27]: 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 bitwiseAnd at line 56. Possible FailurePath: [L54] unsigned int x = 5; [L54] unsigned int x = 5; [L55] CALL func_to_recursive_line_13_to_14_0(&x) VAL [\old(x)={6:0}] [L40] COND TRUE __VERIFIER_nondet_int() [L43] EXPR \read(*x) [L43] *x += 8 [L45] CALL func_to_recursive_line_13_to_14_0(x) VAL [\old(x)={6:0}] [L40] COND FALSE !(__VERIFIER_nondet_int()) [L45] RET func_to_recursive_line_13_to_14_0(x) VAL [\old(x)={6:0}, x={6:0}] [L55] RET func_to_recursive_line_13_to_14_0(&x) VAL [x={6:0}] [L56] EXPR \read(x) [L56] EXPR x & 5 [L56] CALL __VERIFIER_assert((x & 5) == 5) [L23] COND TRUE !cond [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 320 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 272 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 405 IncrementalHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 48 mSDtfsCounter, 405 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 34, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 106 ConstructedInterpolants, 4 QuantifiedInterpolants, 897 SizeOfPredicates, 10 NumberOfNonLiveVariables, 185 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 9/38 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 [2024-10-24 01:08:37,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c4cbc544f6c6468ca141cfd9a471f76e948b2a9f8c6c56806d9220760159bde9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:08:39,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:08:39,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-24 01:08:39,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:08:39,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:08:39,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:08:39,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:08:39,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:08:39,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:08:39,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:08:39,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:08:39,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:08:39,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:08:40,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:08:40,002 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:08:40,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:08:40,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:08:40,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:08:40,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:08:40,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:08:40,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:08:40,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:08:40,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:08:40,005 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 01:08:40,005 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 01:08:40,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:08:40,006 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 01:08:40,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:08:40,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:08:40,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:08:40,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:08:40,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:08:40,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:08:40,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:08:40,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:08:40,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:08:40,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:08:40,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:08:40,018 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 01:08:40,018 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 01:08:40,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:08:40,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:08:40,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:08:40,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:08:40,020 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 01:08:40,020 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4cbc544f6c6468ca141cfd9a471f76e948b2a9f8c6c56806d9220760159bde9 [2024-10-24 01:08:40,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:08:40,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:08:40,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:08:40,354 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:08:40,355 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:08:40,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c [2024-10-24 01:08:41,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:08:42,044 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:08:42,044 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-invariants/recursified_bin-suffix-5.c [2024-10-24 01:08:42,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a085058/71d3934cb8df402b8060b4ff3618b78c/FLAG9042ec850 [2024-10-24 01:08:42,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a085058/71d3934cb8df402b8060b4ff3618b78c [2024-10-24 01:08:42,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:08:42,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:08:42,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:08:42,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:08:42,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:08:42,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680a7d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42, skipping insertion in model container [2024-10-24 01:08:42,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,446 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:08:42,624 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/recursified_loop-invariants/recursified_bin-suffix-5.c[986,999] [2024-10-24 01:08:42,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:08:42,661 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:08:42,674 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/recursified_loop-invariants/recursified_bin-suffix-5.c[986,999] [2024-10-24 01:08:42,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:08:42,696 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:08:42,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42 WrapperNode [2024-10-24 01:08:42,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:08:42,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:08:42,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:08:42,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:08:42,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,729 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-10-24 01:08:42,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:08:42,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:08:42,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:08:42,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:08:42,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,758 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 1 writes are split as follows [0, 1]. [2024-10-24 01:08:42,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:08:42,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:08:42,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:08:42,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:08:42,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (1/1) ... [2024-10-24 01:08:42,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:08:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:08:42,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 01:08:42,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 01:08:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:08:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_14_0 [2024-10-24 01:08:42,868 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_14_0 [2024-10-24 01:08:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 01:08:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 01:08:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-10-24 01:08:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-10-24 01:08:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 01:08:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 01:08:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 01:08:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:08:42,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:08:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 01:08:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 01:08:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 01:08:42,955 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:08:42,957 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:08:43,106 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-24 01:08:43,106 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:08:43,141 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:08:43,141 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:08:43,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:08:43 BoogieIcfgContainer [2024-10-24 01:08:43,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:08:43,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:08:43,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:08:43,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:08:43,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:08:42" (1/3) ... [2024-10-24 01:08:43,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d0693a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:08:43, skipping insertion in model container [2024-10-24 01:08:43,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:42" (2/3) ... [2024-10-24 01:08:43,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d0693a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:08:43, skipping insertion in model container [2024-10-24 01:08:43,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:08:43" (3/3) ... [2024-10-24 01:08:43,151 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_bin-suffix-5.c [2024-10-24 01:08:43,168 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:08:43,168 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:08:43,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:08:43,253 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;@5bbb1742, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:08:43,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:08:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 01:08:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 01:08:43,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:08:43,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:08:43,266 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:08:43,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:08:43,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1275679373, now seen corresponding path program 1 times [2024-10-24 01:08:43,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 01:08:43,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771792009] [2024-10-24 01:08:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:08:43,285 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 [2024-10-24 01:08:43,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 01:08:43,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 01:08:43,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 01:08:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:43,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 01:08:43,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:08:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:08:43,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:08:43,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 01:08:43,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771792009] [2024-10-24 01:08:43,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771792009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:08:43,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:08:43,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:08:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746064996] [2024-10-24 01:08:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:08:43,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:08:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 01:08:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:08:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:08:43,548 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 01:08:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:08:43,616 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-10-24 01:08:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:08:43,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-10-24 01:08:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:08:43,626 INFO L225 Difference]: With dead ends: 21 [2024-10-24 01:08:43,626 INFO L226 Difference]: Without dead ends: 13 [2024-10-24 01:08:43,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:08:43,632 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:08:43,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:08:43,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-24 01:08:43,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-24 01:08:43,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 9 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 01:08:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-10-24 01:08:43,668 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2024-10-24 01:08:43,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:08:43,669 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-10-24 01:08:43,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 01:08:43,669 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-10-24 01:08:43,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-24 01:08:43,670 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:08:43,671 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:08:43,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 01:08:43,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 01:08:43,872 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:08:43,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:08:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1209684099, now seen corresponding path program 1 times [2024-10-24 01:08:43,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 01:08:43,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701310295] [2024-10-24 01:08:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:08:43,874 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 [2024-10-24 01:08:43,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 01:08:43,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 01:08:43,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 01:08:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:08:43,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 01:08:43,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:08:44,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-24 01:08:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 01:08:44,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:08:44,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2024-10-24 01:08:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:08:44,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 01:08:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701310295] [2024-10-24 01:08:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701310295] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:08:44,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 01:08:44,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2024-10-24 01:08:44,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670177659] [2024-10-24 01:08:44,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 01:08:44,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 01:08:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 01:08:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 01:08:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:08:44,615 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-24 01:08:44,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:08:44,746 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-10-24 01:08:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 01:08:44,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 14 [2024-10-24 01:08:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:08:44,747 INFO L225 Difference]: With dead ends: 16 [2024-10-24 01:08:44,747 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 01:08:44,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:08:44,750 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:08:44,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:08:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 01:08:44,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 01:08:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-10-24 01:08:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 01:08:44,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2024-10-24 01:08:44,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:08:44,753 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 01:08:44,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-24 01:08:44,754 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 01:08:44,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 01:08:44,756 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 01:08:44,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-24 01:08:44,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 01:08:44,961 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 01:08:44,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-24 01:08:45,030 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 01:08:45,038 WARN L156 FloydHoareUtils]: Requires clause for func_to_recursive_line_13_to_14_0 contained old-variable. Original clause: (= |old(#memory_int#1)| |#memory_int#1|) Eliminated clause: true [2024-10-24 01:08:45,044 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-24 01:08:45,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:08:45 BoogieIcfgContainer [2024-10-24 01:08:45,049 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 01:08:45,049 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 01:08:45,050 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 01:08:45,050 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 01:08:45,051 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:08:43" (3/4) ... [2024-10-24 01:08:45,053 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 01:08:45,056 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_13_to_14_0 [2024-10-24 01:08:45,060 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-10-24 01:08:45,060 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-24 01:08:45,061 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 01:08:45,061 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 01:08:45,231 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 01:08:45,231 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 01:08:45,231 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 01:08:45,234 INFO L158 Benchmark]: Toolchain (without parser) took 2812.36ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.7MB in the beginning and 47.0MB in the end (delta: -13.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-10-24 01:08:45,235 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 33.6MB in the beginning and 33.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 01:08:45,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.36ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 50.2MB in the end (delta: -16.7MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-10-24 01:08:45,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.40ms. Allocated memory is still 71.3MB. Free memory was 50.2MB in the beginning and 48.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 01:08:45,236 INFO L158 Benchmark]: Boogie Preprocessor took 46.76ms. Allocated memory is still 71.3MB. Free memory was 48.8MB in the beginning and 47.0MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 01:08:45,236 INFO L158 Benchmark]: RCFGBuilder took 363.27ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 34.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 01:08:45,237 INFO L158 Benchmark]: TraceAbstraction took 1904.93ms. Allocated memory is still 71.3MB. Free memory was 34.2MB in the beginning and 41.7MB in the end (delta: -7.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 01:08:45,238 INFO L158 Benchmark]: Witness Printer took 182.14ms. Allocated memory is still 71.3MB. Free memory was 41.2MB in the beginning and 47.0MB in the end (delta: -5.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 01:08:45,239 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 33.6MB in the beginning and 33.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.36ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 50.2MB in the end (delta: -16.7MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.40ms. Allocated memory is still 71.3MB. Free memory was 50.2MB in the beginning and 48.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.76ms. Allocated memory is still 71.3MB. Free memory was 48.8MB in the beginning and 47.0MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 363.27ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 34.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1904.93ms. Allocated memory is still 71.3MB. Free memory was 34.2MB in the beginning and 41.7MB in the end (delta: -7.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 182.14ms. Allocated memory is still 71.3MB. Free memory was 41.2MB in the beginning and 47.0MB in the end (delta: -5.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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 - PositiveResult [Line: 27]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 4 QuantifiedInterpolants, 331 SizeOfPredicates, 6 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 3/8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 01:08:45,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE