./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-pe-cn_file-64.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 ff0278513429ffc22c784418884e09a92254749accfdc90a0be2595788a173c1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:25:43,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:25:43,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:25:43,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:25:43,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:25:43,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:25:43,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:25:43,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:25:43,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:25:43,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:25:43,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:25:43,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:25:43,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:25:43,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:25:43,585 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:25:43,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:25:43,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:25:43,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:25:43,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:25:43,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:25:43,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:25:43,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:25:43,592 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:25:43,592 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:25:43,592 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:25:43,592 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:25:43,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:25:43,593 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:25:43,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:25:43,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:25:43,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:25:43,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:25:43,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:25:43,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:25:43,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:25:43,595 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:25:43,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:25:43,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:25:43,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:25:43,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:25:43,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:25:43,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:25:43,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff0278513429ffc22c784418884e09a92254749accfdc90a0be2595788a173c1 [2024-11-18 20:25:43,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:25:43,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:25:43,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:25:43,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:25:43,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:25:43,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-64.i [2024-11-18 20:25:45,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:25:45,581 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:25:45,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-64.i [2024-11-18 20:25:45,594 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e048f44a9/c21b16f7ad8d4bccbe0c775cbcc748ac/FLAG2cf224be3 [2024-11-18 20:25:45,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e048f44a9/c21b16f7ad8d4bccbe0c775cbcc748ac [2024-11-18 20:25:45,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:25:45,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:25:45,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:25:45,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:25:45,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:25:45,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:45,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e627f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45, skipping insertion in model container [2024-11-18 20:25:45,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:45,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:25:45,814 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-pe-cn_file-64.i[919,932] [2024-11-18 20:25:45,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:25:45,905 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:25:45,918 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-pe-cn_file-64.i[919,932] [2024-11-18 20:25:45,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:25:45,982 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:25:45,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45 WrapperNode [2024-11-18 20:25:45,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:25:45,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:25:45,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:25:45,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:25:45,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,033 INFO L138 Inliner]: procedures = 26, calls = 59, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 274 [2024-11-18 20:25:46,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:25:46,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:25:46,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:25:46,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:25:46,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,074 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]. [2024-11-18 20:25:46,075 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:25:46,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:25:46,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:25:46,100 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:25:46,101 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (1/1) ... [2024-11-18 20:25:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:25:46,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:25:46,156 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) [2024-11-18 20:25:46,166 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 [2024-11-18 20:25:46,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:25:46,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:25:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:25:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:25:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:25:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:25:46,380 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:25:46,383 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:25:46,784 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-18 20:25:46,784 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:25:46,803 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:25:46,804 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:25:46,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:46 BoogieIcfgContainer [2024-11-18 20:25:46,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:25:46,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:25:46,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:25:46,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:25:46,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:25:45" (1/3) ... [2024-11-18 20:25:46,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f5d671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:46, skipping insertion in model container [2024-11-18 20:25:46,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:45" (2/3) ... [2024-11-18 20:25:46,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f5d671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:46, skipping insertion in model container [2024-11-18 20:25:46,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:46" (3/3) ... [2024-11-18 20:25:46,813 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-64.i [2024-11-18 20:25:46,825 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:25:46,826 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:25:46,892 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:25:46,898 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;@234fcaa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:25:46,899 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:25:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 69 states have internal predecessors, (93), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:25:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 20:25:46,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:25:46,922 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:25:46,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:25:46,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:25:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1883763579, now seen corresponding path program 1 times [2024-11-18 20:25:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:25:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347596388] [2024-11-18 20:25:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:25:46,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:25:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:25:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 20:25:51,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:25:51,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347596388] [2024-11-18 20:25:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347596388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:25:51,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:25:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:25:51,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107266994] [2024-11-18 20:25:51,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:25:51,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:25:51,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:25:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:25:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:25:51,810 INFO L87 Difference]: Start difference. First operand has 117 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 69 states have internal predecessors, (93), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:25:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:25:52,644 INFO L93 Difference]: Finished difference Result 408 states and 795 transitions. [2024-11-18 20:25:52,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:25:52,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 282 [2024-11-18 20:25:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:25:52,663 INFO L225 Difference]: With dead ends: 408 [2024-11-18 20:25:52,663 INFO L226 Difference]: Without dead ends: 294 [2024-11-18 20:25:52,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:25:52,678 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 220 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:25:52,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 806 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:25:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-18 20:25:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 128. [2024-11-18 20:25:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 80 states have (on average 1.3875) internal successors, (111), 80 states have internal predecessors, (111), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:25:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 203 transitions. [2024-11-18 20:25:52,775 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 203 transitions. Word has length 282 [2024-11-18 20:25:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:25:52,781 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 203 transitions. [2024-11-18 20:25:52,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:25:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 203 transitions. [2024-11-18 20:25:52,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 20:25:52,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:25:52,791 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:25:52,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 20:25:52,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:25:52,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:25:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash -563473285, now seen corresponding path program 1 times [2024-11-18 20:25:52,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:25:52,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837200269] [2024-11-18 20:25:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:25:52,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:25:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:25:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 20:25:53,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:25:53,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837200269] [2024-11-18 20:25:53,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837200269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:25:53,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:25:53,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:25:53,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856297803] [2024-11-18 20:25:53,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:25:53,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:25:53,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:25:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:25:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:25:53,230 INFO L87 Difference]: Start difference. First operand 128 states and 203 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:25:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:25:53,618 INFO L93 Difference]: Finished difference Result 368 states and 579 transitions. [2024-11-18 20:25:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:25:53,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 282 [2024-11-18 20:25:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:25:53,626 INFO L225 Difference]: With dead ends: 368 [2024-11-18 20:25:53,626 INFO L226 Difference]: Without dead ends: 243 [2024-11-18 20:25:53,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:25:53,629 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 210 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:25:53,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 874 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:25:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-18 20:25:53,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 128. [2024-11-18 20:25:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 80 states have (on average 1.3875) internal successors, (111), 80 states have internal predecessors, (111), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:25:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 203 transitions. [2024-11-18 20:25:53,664 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 203 transitions. Word has length 282 [2024-11-18 20:25:53,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:25:53,665 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 203 transitions. [2024-11-18 20:25:53,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:25:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 203 transitions. [2024-11-18 20:25:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 20:25:53,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:25:53,671 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:25:53,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:25:53,672 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:25:53,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:25:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1584541639, now seen corresponding path program 1 times [2024-11-18 20:25:53,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:25:53,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024681698] [2024-11-18 20:25:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:25:53,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:25:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:25:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 20:25:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:25:54,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024681698] [2024-11-18 20:25:54,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024681698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:25:54,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:25:54,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:25:54,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167559603] [2024-11-18 20:25:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:25:54,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:25:54,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:25:54,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:25:54,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:25:54,051 INFO L87 Difference]: Start difference. First operand 128 states and 203 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:25:54,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:25:54,287 INFO L93 Difference]: Finished difference Result 368 states and 578 transitions. [2024-11-18 20:25:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:25:54,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 282 [2024-11-18 20:25:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:25:54,293 INFO L225 Difference]: With dead ends: 368 [2024-11-18 20:25:54,294 INFO L226 Difference]: Without dead ends: 243 [2024-11-18 20:25:54,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:25:54,297 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 189 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:25:54,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1121 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:25:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-18 20:25:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 113. [2024-11-18 20:25:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 20:25:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 177 transitions. [2024-11-18 20:25:54,326 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 177 transitions. Word has length 282 [2024-11-18 20:25:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:25:54,327 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 177 transitions. [2024-11-18 20:25:54,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-18 20:25:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 177 transitions. [2024-11-18 20:25:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-18 20:25:54,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:25:54,336 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:25:54,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:25:54,336 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:25:54,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:25:54,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1567115350, now seen corresponding path program 1 times [2024-11-18 20:25:54,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:25:54,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795298692] [2024-11-18 20:25:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:25:54,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:25:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat