./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 cea92a885059765321ed7cf859cc3b638b98fdf9848e92fde0851dbffef1cf19 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 02:59:29,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 02:59:29,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 02:59:29,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 02:59:29,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 02:59:29,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 02:59:29,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 02:59:29,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 02:59:29,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 02:59:29,802 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 02:59:29,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 02:59:29,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 02:59:29,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 02:59:29,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 02:59:29,803 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 02:59:29,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 02:59:29,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 02:59:29,804 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 02:59:29,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 02:59:29,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 02:59:29,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 02:59:29,804 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 02:59:29,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 02:59:29,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 02:59:29,805 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 02:59:29,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 02:59:29,805 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 02:59:29,805 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 02:59:29,805 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 02:59:29,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:59:29,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:59:29,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:59:29,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:59:29,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 02:59:29,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:59:29,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:59:29,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 02:59:29,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 02:59:29,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 02:59:29,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 02:59:29,808 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> cea92a885059765321ed7cf859cc3b638b98fdf9848e92fde0851dbffef1cf19 [2025-01-09 02:59:30,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 02:59:30,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 02:59:30,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 02:59:30,088 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 02:59:30,089 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 02:59:30,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c [2025-01-09 02:59:31,439 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5e88bc20c/229298c86e1841779c25969664942a3e/FLAGe3ba73946 [2025-01-09 02:59:31,679 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 02:59:31,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c [2025-01-09 02:59:31,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5e88bc20c/229298c86e1841779c25969664942a3e/FLAGe3ba73946 [2025-01-09 02:59:31,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5e88bc20c/229298c86e1841779c25969664942a3e [2025-01-09 02:59:31,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 02:59:31,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 02:59:31,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 02:59:31,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 02:59:31,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 02:59:31,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6811401f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31, skipping insertion in model container [2025-01-09 02:59:31,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 02:59:31,901 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c[1014,1027] [2025-01-09 02:59:31,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:59:31,917 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 02:59:31,930 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c[1014,1027] [2025-01-09 02:59:31,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:59:31,944 INFO L204 MainTranslator]: Completed translation [2025-01-09 02:59:31,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31 WrapperNode [2025-01-09 02:59:31,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 02:59:31,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 02:59:31,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 02:59:31,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 02:59:31,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,974 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2025-01-09 02:59:31,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 02:59:31,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 02:59:31,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 02:59:31,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 02:59:31,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,992 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 02:59:31,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:31,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:32,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:32,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:32,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:32,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 02:59:32,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 02:59:32,006 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 02:59:32,006 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 02:59:32,007 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (1/1) ... [2025-01-09 02:59:32,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:59:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:32,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 02:59:32,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 02:59:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 02:59:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 02:59:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 02:59:32,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 02:59:32,118 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 02:59:32,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 02:59:32,221 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-01-09 02:59:32,221 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 02:59:32,230 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 02:59:32,231 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 02:59:32,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:59:32 BoogieIcfgContainer [2025-01-09 02:59:32,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 02:59:32,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 02:59:32,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 02:59:32,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 02:59:32,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:59:31" (1/3) ... [2025-01-09 02:59:32,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bddba70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:59:32, skipping insertion in model container [2025-01-09 02:59:32,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:59:31" (2/3) ... [2025-01-09 02:59:32,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bddba70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:59:32, skipping insertion in model container [2025-01-09 02:59:32,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:59:32" (3/3) ... [2025-01-09 02:59:32,240 INFO L128 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+cfa-reducer.c [2025-01-09 02:59:32,253 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 02:59:32,255 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gauss_sum.i.p+cfa-reducer.c that has 1 procedures, 11 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 02:59:32,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 02:59:32,317 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;@474098df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 02:59:32,317 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 02:59:32,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) [2025-01-09 02:59:32,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 02:59:32,325 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:32,325 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:32,326 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:32,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1806908747, now seen corresponding path program 1 times [2025-01-09 02:59:32,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:32,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748345783] [2025-01-09 02:59:32,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:59:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:32,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 02:59:32,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 02:59:32,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:32,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:32,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:32,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748345783] [2025-01-09 02:59:32,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748345783] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:59:32,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:59:32,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 02:59:32,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52026639] [2025-01-09 02:59:32,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:59:32,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 02:59:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:32,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 02:59:32,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:59:32,562 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2025-01-09 02:59:32,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:32,588 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2025-01-09 02:59:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 02:59:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-09 02:59:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:32,593 INFO L225 Difference]: With dead ends: 18 [2025-01-09 02:59:32,594 INFO L226 Difference]: Without dead ends: 9 [2025-01-09 02:59:32,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:59:32,597 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:32,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:59:32,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-01-09 02:59:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-01-09 02:59:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2025-01-09 02:59:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-01-09 02:59:32,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2025-01-09 02:59:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:32,625 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-01-09 02:59:32,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2025-01-09 02:59:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-01-09 02:59:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 02:59:32,626 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:32,626 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:32,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 02:59:32,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:32,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash 179533835, now seen corresponding path program 1 times [2025-01-09 02:59:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:32,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779351811] [2025-01-09 02:59:32,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:59:32,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:32,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 02:59:32,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 02:59:32,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:32,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 02:59:32,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380795425] [2025-01-09 02:59:32,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:59:32,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:32,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:32,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:32,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 02:59:32,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 02:59:32,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 02:59:32,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:32,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:32,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 02:59:32,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:32,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:32,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:32,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779351811] [2025-01-09 02:59:32,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 02:59:32,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380795425] [2025-01-09 02:59:32,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380795425] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:32,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 02:59:32,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2025-01-09 02:59:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336575746] [2025-01-09 02:59:32,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:32,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 02:59:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:32,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 02:59:32,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-01-09 02:59:32,967 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-01-09 02:59:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:33,001 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2025-01-09 02:59:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 02:59:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-09 02:59:33,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:33,002 INFO L225 Difference]: With dead ends: 13 [2025-01-09 02:59:33,002 INFO L226 Difference]: Without dead ends: 10 [2025-01-09 02:59:33,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-01-09 02:59:33,003 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:33,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:59:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-01-09 02:59:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-01-09 02:59:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2025-01-09 02:59:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2025-01-09 02:59:33,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2025-01-09 02:59:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:33,007 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2025-01-09 02:59:33,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-01-09 02:59:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2025-01-09 02:59:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-09 02:59:33,007 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:33,008 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:59:33,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 02:59:33,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:33,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:33,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1270519115, now seen corresponding path program 2 times [2025-01-09 02:59:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:33,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390864057] [2025-01-09 02:59:33,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:33,215 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 9 statements into 2 equivalence classes. [2025-01-09 02:59:33,224 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 02:59:33,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:33,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 02:59:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718613248] [2025-01-09 02:59:33,227 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:33,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:33,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:33,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:33,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 02:59:33,252 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 9 statements into 2 equivalence classes. [2025-01-09 02:59:33,263 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 02:59:33,263 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:33,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:33,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 02:59:33,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:33,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 02:59:33,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:33,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390864057] [2025-01-09 02:59:33,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 02:59:33,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718613248] [2025-01-09 02:59:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718613248] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:33,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 02:59:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2025-01-09 02:59:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244001227] [2025-01-09 02:59:33,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:33,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 02:59:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:33,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 02:59:33,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-09 02:59:33,431 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2025-01-09 02:59:33,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:33,526 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2025-01-09 02:59:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 02:59:33,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-09 02:59:33,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:33,526 INFO L225 Difference]: With dead ends: 11 [2025-01-09 02:59:33,527 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 02:59:33,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-01-09 02:59:33,528 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:33,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:59:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 02:59:33,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 02:59:33,529 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) [2025-01-09 02:59:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 02:59:33,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2025-01-09 02:59:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:33,530 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 02:59:33,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2025-01-09 02:59:33,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 02:59:33,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 02:59:33,532 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 02:59:33,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:33,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:33,736 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1] [2025-01-09 02:59:33,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 02:59:33,743 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 02:59:33,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 02:59:33 BoogieIcfgContainer [2025-01-09 02:59:33,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 02:59:33,748 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 02:59:33,748 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 02:59:33,748 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 02:59:33,748 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:59:32" (3/4) ... [2025-01-09 02:59:33,750 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 02:59:33,755 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-01-09 02:59:33,755 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 02:59:33,755 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 02:59:33,756 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 02:59:33,825 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 02:59:33,825 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 02:59:33,825 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 02:59:33,827 INFO L158 Benchmark]: Toolchain (without parser) took 2096.68ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 95.8MB in the end (delta: 17.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2025-01-09 02:59:33,827 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 02:59:33,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.01ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 102.2MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 02:59:33,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.54ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 100.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 02:59:33,828 INFO L158 Benchmark]: Boogie Preprocessor took 31.13ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 99.9MB in the end (delta: 926.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 02:59:33,829 INFO L158 Benchmark]: RCFGBuilder took 225.13ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 90.2MB in the end (delta: 9.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 02:59:33,829 INFO L158 Benchmark]: TraceAbstraction took 1513.93ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 101.3MB in the end (delta: -11.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 02:59:33,830 INFO L158 Benchmark]: Witness Printer took 77.95ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 95.8MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 02:59:33,831 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.01ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 102.2MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.54ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 100.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.13ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 99.9MB in the end (delta: 926.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 225.13ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 90.2MB in the end (delta: 9.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1513.93ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 101.3MB in the end (delta: -11.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 77.95ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 95.8MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 49]: 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 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 163 SizeOfPredicates, 1 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/8 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 02:59:33,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 Writing output log to file Ultimate.log Result: TRUE