./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i -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 32753d18822513354e4b9efa6f4c19579a930a0a9d80feee2c0fa6780fee33a5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 09:25:09,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 09:25:09,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 09:25:09,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 09:25:09,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 09:25:09,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 09:25:09,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 09:25:09,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 09:25:09,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 09:25:09,576 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 09:25:09,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 09:25:09,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 09:25:09,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 09:25:09,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 09:25:09,578 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 09:25:09,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 09:25:09,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 09:25:09,579 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 09:25:09,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 09:25:09,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 09:25:09,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 09:25:09,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 09:25:09,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 09:25:09,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 09:25:09,581 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 09:25:09,581 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 09:25:09,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 09:25:09,581 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 09:25:09,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 09:25:09,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 09:25:09,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 09:25:09,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 09:25:09,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 09:25:09,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 09:25:09,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 09:25:09,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 09:25:09,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 09:25:09,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 09:25:09,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 09:25:09,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 09:25:09,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 09:25:09,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 09:25:09,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32753d18822513354e4b9efa6f4c19579a930a0a9d80feee2c0fa6780fee33a5 [2024-11-22 09:25:09,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 09:25:09,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 09:25:09,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 09:25:09,866 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 09:25:09,867 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 09:25:09,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2024-11-22 09:25:11,205 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 09:25:11,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 09:25:11,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2024-11-22 09:25:11,470 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5025f2c1f/8b6be068ad2c4fb6bfe0b1d4ff90bf5b/FLAGcd1e6f2c7 [2024-11-22 09:25:11,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5025f2c1f/8b6be068ad2c4fb6bfe0b1d4ff90bf5b [2024-11-22 09:25:11,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 09:25:11,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 09:25:11,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 09:25:11,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 09:25:11,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 09:25:11,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:25:11" (1/1) ... [2024-11-22 09:25:11,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6f0c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:11, skipping insertion in model container [2024-11-22 09:25:11,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:25:11" (1/1) ... [2024-11-22 09:25:11,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 09:25:11,995 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i[919,932] [2024-11-22 09:25:12,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 09:25:12,086 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 09:25:12,096 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i[919,932] [2024-11-22 09:25:12,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 09:25:12,155 INFO L204 MainTranslator]: Completed translation [2024-11-22 09:25:12,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12 WrapperNode [2024-11-22 09:25:12,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 09:25:12,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 09:25:12,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 09:25:12,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 09:25:12,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,253 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 242 [2024-11-22 09:25:12,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 09:25:12,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 09:25:12,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 09:25:12,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 09:25:12,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,301 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 09:25:12,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 09:25:12,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 09:25:12,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 09:25:12,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 09:25:12,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (1/1) ... [2024-11-22 09:25:12,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 09:25:12,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 09:25:12,376 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) [2024-11-22 09:25:12,383 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 [2024-11-22 09:25:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 09:25:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 09:25:12,439 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 09:25:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 09:25:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 09:25:12,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 09:25:12,525 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 09:25:12,530 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 09:25:12,914 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-22 09:25:12,914 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 09:25:12,928 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 09:25:12,928 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 09:25:12,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:25:12 BoogieIcfgContainer [2024-11-22 09:25:12,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 09:25:12,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 09:25:12,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 09:25:12,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 09:25:12,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:25:11" (1/3) ... [2024-11-22 09:25:12,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d991f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:25:12, skipping insertion in model container [2024-11-22 09:25:12,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:25:12" (2/3) ... [2024-11-22 09:25:12,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d991f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:25:12, skipping insertion in model container [2024-11-22 09:25:12,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:25:12" (3/3) ... [2024-11-22 09:25:12,936 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2024-11-22 09:25:12,953 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 09:25:12,953 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 09:25:13,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 09:25:13,015 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;@95249d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 09:25:13,016 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 09:25:13,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 67 states have (on average 1.462686567164179) internal successors, (98), 68 states have internal predecessors, (98), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-22 09:25:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-22 09:25:13,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:25:13,041 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:25:13,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:25:13,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:25:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1016225513, now seen corresponding path program 1 times [2024-11-22 09:25:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:25:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72027004] [2024-11-22 09:25:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:25:13,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:25:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:25:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-22 09:25:13,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:25:13,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72027004] [2024-11-22 09:25:13,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72027004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 09:25:13,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181977228] [2024-11-22 09:25:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:25:13,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 09:25:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 09:25:13,352 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) [2024-11-22 09:25:13,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 09:25:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:25:13,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 09:25:13,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 09:25:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-22 09:25:13,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 09:25:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181977228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:25:13,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 09:25:13,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 09:25:13,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844696517] [2024-11-22 09:25:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:25:13,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 09:25:13,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:25:13,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 09:25:13,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 09:25:13,702 INFO L87 Difference]: Start difference. First operand has 104 states, 67 states have (on average 1.462686567164179) internal successors, (98), 68 states have internal predecessors, (98), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-22 09:25:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:25:13,750 INFO L93 Difference]: Finished difference Result 201 states and 360 transitions. [2024-11-22 09:25:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 09:25:13,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 215 [2024-11-22 09:25:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:25:13,761 INFO L225 Difference]: With dead ends: 201 [2024-11-22 09:25:13,762 INFO L226 Difference]: Without dead ends: 100 [2024-11-22 09:25:13,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 09:25:13,771 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 09:25:13,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 09:25:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-22 09:25:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-22 09:25:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-22 09:25:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2024-11-22 09:25:13,832 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 215 [2024-11-22 09:25:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:25:13,832 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2024-11-22 09:25:13,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-22 09:25:13,833 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2024-11-22 09:25:13,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-22 09:25:13,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:25:13,836 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:25:13,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 09:25:14,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 09:25:14,037 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:25:14,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:25:14,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1689287729, now seen corresponding path program 1 times [2024-11-22 09:25:14,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:25:14,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484203365] [2024-11-22 09:25:14,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:25:14,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:25:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:25:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 09:25:14,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:25:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484203365] [2024-11-22 09:25:14,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484203365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:25:14,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:25:14,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 09:25:14,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303493939] [2024-11-22 09:25:14,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:25:14,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 09:25:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:25:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 09:25:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 09:25:14,477 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:25:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:25:14,598 INFO L93 Difference]: Finished difference Result 294 states and 468 transitions. [2024-11-22 09:25:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 09:25:14,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 215 [2024-11-22 09:25:14,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:25:14,602 INFO L225 Difference]: With dead ends: 294 [2024-11-22 09:25:14,603 INFO L226 Difference]: Without dead ends: 197 [2024-11-22 09:25:14,604 INFO L431 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 [2024-11-22 09:25:14,605 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 94 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 09:25:14,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 468 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 09:25:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-22 09:25:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2024-11-22 09:25:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.403225806451613) internal successors, (174), 124 states have internal predecessors, (174), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-22 09:25:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 310 transitions. [2024-11-22 09:25:14,657 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 310 transitions. Word has length 215 [2024-11-22 09:25:14,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:25:14,658 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 310 transitions. [2024-11-22 09:25:14,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:25:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 310 transitions. [2024-11-22 09:25:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-22 09:25:14,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:25:14,665 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:25:14,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 09:25:14,665 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:25:14,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:25:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash -871639279, now seen corresponding path program 1 times [2024-11-22 09:25:14,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:25:14,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793274423] [2024-11-22 09:25:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:25:14,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:25:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:25:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 09:25:15,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:25:15,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793274423] [2024-11-22 09:25:15,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793274423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:25:15,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:25:15,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 09:25:15,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684986799] [2024-11-22 09:25:15,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:25:15,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 09:25:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:25:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 09:25:15,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 09:25:15,172 INFO L87 Difference]: Start difference. First operand 195 states and 310 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:25:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:25:15,425 INFO L93 Difference]: Finished difference Result 520 states and 830 transitions. [2024-11-22 09:25:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 09:25:15,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 215 [2024-11-22 09:25:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:25:15,431 INFO L225 Difference]: With dead ends: 520 [2024-11-22 09:25:15,432 INFO L226 Difference]: Without dead ends: 328 [2024-11-22 09:25:15,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 09:25:15,435 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 121 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 09:25:15,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 458 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 09:25:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-22 09:25:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 292. [2024-11-22 09:25:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 186 states have (on average 1.4086021505376345) internal successors, (262), 186 states have internal predecessors, (262), 102 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-22 09:25:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 466 transitions. [2024-11-22 09:25:15,508 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 466 transitions. Word has length 215 [2024-11-22 09:25:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:25:15,511 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 466 transitions. [2024-11-22 09:25:15,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:25:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 466 transitions. [2024-11-22 09:25:15,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-22 09:25:15,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:25:15,519 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:25:15,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 09:25:15,520 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:25:15,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:25:15,520 INFO L85 PathProgramCache]: Analyzing trace with hash 348602023, now seen corresponding path program 1 times [2024-11-22 09:25:15,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:25:15,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071225952] [2024-11-22 09:25:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:25:15,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:25:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:25:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 09:25:15,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 09:25:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071225952] [2024-11-22 09:25:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071225952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 09:25:15,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 09:25:15,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 09:25:15,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313449359] [2024-11-22 09:25:15,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 09:25:15,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 09:25:15,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 09:25:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 09:25:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 09:25:15,901 INFO L87 Difference]: Start difference. First operand 292 states and 466 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:25:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 09:25:16,098 INFO L93 Difference]: Finished difference Result 694 states and 1103 transitions. [2024-11-22 09:25:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 09:25:16,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 216 [2024-11-22 09:25:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 09:25:16,105 INFO L225 Difference]: With dead ends: 694 [2024-11-22 09:25:16,106 INFO L226 Difference]: Without dead ends: 502 [2024-11-22 09:25:16,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 09:25:16,108 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 136 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 09:25:16,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 456 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 09:25:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-22 09:25:16,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 482. [2024-11-22 09:25:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 306 states have (on average 1.3986928104575163) internal successors, (428), 306 states have internal predecessors, (428), 170 states have call successors, (170), 5 states have call predecessors, (170), 5 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-22 09:25:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 768 transitions. [2024-11-22 09:25:16,161 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 768 transitions. Word has length 216 [2024-11-22 09:25:16,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 09:25:16,162 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 768 transitions. [2024-11-22 09:25:16,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 09:25:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 768 transitions. [2024-11-22 09:25:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-22 09:25:16,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 09:25:16,165 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 09:25:16,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 09:25:16,165 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 09:25:16,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 09:25:16,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1835504070, now seen corresponding path program 1 times [2024-11-22 09:25:16,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 09:25:16,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297962847] [2024-11-22 09:25:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:25:16,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 09:25:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 09:25:16,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326790321] [2024-11-22 09:25:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 09:25:16,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 09:25:16,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 09:25:16,360 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) [2024-11-22 09:25:16,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 09:25:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 09:25:16,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-22 09:25:16,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 09:25:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 345 proven. 489 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2024-11-22 09:25:20,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 09:25:31,646 WARN L286 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-22 09:25:36,892 WARN L286 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 09:25:57,580 WARN L286 SmtUtils]: Spent 10.42s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-22 09:26:16,564 WARN L286 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-22 09:26:23,063 WARN L286 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 09:26:48,458 WARN L286 SmtUtils]: Spent 12.44s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)