./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.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_operatoramount_amount250_file-87.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 b5307a371ce4040b29e58213712f562a0e2a68de1ce11167436db0e47f91ed14 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:48:10,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:48:10,204 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:48:10,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:48:10,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:48:10,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:48:10,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:48:10,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:48:10,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:48:10,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:48:10,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:48:10,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:48:10,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:48:10,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:48:10,251 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:48:10,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:48:10,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:48:10,252 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:48:10,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:48:10,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:48:10,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:48:10,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:48:10,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:48:10,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:48:10,255 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:48:10,255 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:48:10,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:48:10,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:48:10,256 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:48:10,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:48:10,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:48:10,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:48:10,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:48:10,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:48:10,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:48:10,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:48:10,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:48:10,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:48:10,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:48:10,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:48:10,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:48:10,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:48:10,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5307a371ce4040b29e58213712f562a0e2a68de1ce11167436db0e47f91ed14 [2024-11-18 23:48:10,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:48:10,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:48:10,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:48:10,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:48:10,536 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:48:10,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.i [2024-11-18 23:48:12,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:48:12,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:48:12,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-87.i [2024-11-18 23:48:12,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2b4e183/7da3e9a43e954ce9ba879f8ff5d48f6e/FLAGe0919a5fc [2024-11-18 23:48:12,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2b4e183/7da3e9a43e954ce9ba879f8ff5d48f6e [2024-11-18 23:48:12,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:48:12,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:48:12,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:48:12,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:48:12,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:48:12,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:12,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd7df42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12, skipping insertion in model container [2024-11-18 23:48:12,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:12,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:48:12,576 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_operatoramount_amount250_file-87.i[916,929] [2024-11-18 23:48:12,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:48:12,753 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:48:12,764 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_operatoramount_amount250_file-87.i[916,929] [2024-11-18 23:48:12,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:48:12,845 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:48:12,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12 WrapperNode [2024-11-18 23:48:12,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:48:12,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:48:12,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:48:12,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:48:12,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:12,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:12,967 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 485 [2024-11-18 23:48:12,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:48:12,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:48:12,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:48:12,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:48:12,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:12,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,058 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 23:48:13,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:48:13,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:48:13,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:48:13,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:48:13,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (1/1) ... [2024-11-18 23:48:13,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:48:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:13,169 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 23:48:13,176 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 23:48:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:48:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:48:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:48:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:48:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:48:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:48:13,367 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:48:13,370 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:48:14,403 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-11-18 23:48:14,404 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:48:14,426 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:48:14,428 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:48:14,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:48:14 BoogieIcfgContainer [2024-11-18 23:48:14,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:48:14,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:48:14,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:48:14,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:48:14,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:48:12" (1/3) ... [2024-11-18 23:48:14,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7266d77b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:48:14, skipping insertion in model container [2024-11-18 23:48:14,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:48:12" (2/3) ... [2024-11-18 23:48:14,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7266d77b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:48:14, skipping insertion in model container [2024-11-18 23:48:14,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:48:14" (3/3) ... [2024-11-18 23:48:14,437 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-87.i [2024-11-18 23:48:14,455 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:48:14,455 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:48:14,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:48:14,545 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;@31247690, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:48:14,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:48:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 136 states have (on average 1.4705882352941178) internal successors, (200), 137 states have internal predecessors, (200), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 23:48:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-18 23:48:14,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:14,589 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:14,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:14,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1023826491, now seen corresponding path program 1 times [2024-11-18 23:48:14,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:14,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592997530] [2024-11-18 23:48:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:14,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2024-11-18 23:48:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:15,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592997530] [2024-11-18 23:48:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592997530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:15,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132957142] [2024-11-18 23:48:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:15,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:15,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:15,336 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) [2024-11-18 23:48:15,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:48:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:15,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:48:15,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2024-11-18 23:48:15,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:48:15,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132957142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:15,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:48:15,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:48:15,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449331446] [2024-11-18 23:48:15,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:15,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:48:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:15,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:48:15,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:48:15,799 INFO L87 Difference]: Start difference. First operand has 201 states, 136 states have (on average 1.4705882352941178) internal successors, (200), 137 states have internal predecessors, (200), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-18 23:48:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:15,856 INFO L93 Difference]: Finished difference Result 395 states and 704 transitions. [2024-11-18 23:48:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:48:15,858 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) Word has length 390 [2024-11-18 23:48:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:15,870 INFO L225 Difference]: With dead ends: 395 [2024-11-18 23:48:15,870 INFO L226 Difference]: Without dead ends: 197 [2024-11-18 23:48:15,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:48:15,881 INFO L432 NwaCegarLoop]: 317 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, 317 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 [2024-11-18 23:48:15,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:48:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-18 23:48:15,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-18 23:48:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 133 states have internal predecessors, (193), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 23:48:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 317 transitions. [2024-11-18 23:48:15,977 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 317 transitions. Word has length 390 [2024-11-18 23:48:15,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:15,980 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 317 transitions. [2024-11-18 23:48:15,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-18 23:48:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 317 transitions. [2024-11-18 23:48:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-18 23:48:15,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:15,999 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:16,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:48:16,200 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 [2024-11-18 23:48:16,201 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:16,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1427852779, now seen corresponding path program 1 times [2024-11-18 23:48:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:16,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013619795] [2024-11-18 23:48:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:16,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-18 23:48:16,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:16,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013619795] [2024-11-18 23:48:16,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013619795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:16,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:16,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:48:16,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485362358] [2024-11-18 23:48:16,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:16,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:48:16,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:48:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:48:16,603 INFO L87 Difference]: Start difference. First operand 197 states and 317 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:16,734 INFO L93 Difference]: Finished difference Result 576 states and 930 transitions. [2024-11-18 23:48:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:48:16,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 390 [2024-11-18 23:48:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:16,743 INFO L225 Difference]: With dead ends: 576 [2024-11-18 23:48:16,745 INFO L226 Difference]: Without dead ends: 382 [2024-11-18 23:48:16,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:48:16,749 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 303 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:16,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 884 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:48:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-18 23:48:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 202. [2024-11-18 23:48:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 138 states have (on average 1.4492753623188406) internal successors, (200), 138 states have internal predecessors, (200), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-18 23:48:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 324 transitions. [2024-11-18 23:48:16,795 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 324 transitions. Word has length 390 [2024-11-18 23:48:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:16,798 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 324 transitions. [2024-11-18 23:48:16,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 324 transitions. [2024-11-18 23:48:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-18 23:48:16,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:16,805 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:16,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:48:16,805 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:16,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:16,806 INFO L85 PathProgramCache]: Analyzing trace with hash -768321257, now seen corresponding path program 1 times [2024-11-18 23:48:16,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:16,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801318018] [2024-11-18 23:48:16,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:16,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-18 23:48:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801318018] [2024-11-18 23:48:17,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801318018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:17,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:17,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:48:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650455045] [2024-11-18 23:48:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:17,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:48:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:17,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:48:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:17,876 INFO L87 Difference]: Start difference. First operand 202 states and 324 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:18,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:18,200 INFO L93 Difference]: Finished difference Result 616 states and 981 transitions. [2024-11-18 23:48:18,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:48:18,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 390 [2024-11-18 23:48:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:18,205 INFO L225 Difference]: With dead ends: 616 [2024-11-18 23:48:18,205 INFO L226 Difference]: Without dead ends: 417 [2024-11-18 23:48:18,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:18,207 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 446 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:18,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 712 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:48:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-18 23:48:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 346. [2024-11-18 23:48:18,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 269 states have (on average 1.5092936802973977) internal successors, (406), 270 states have internal predecessors, (406), 74 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-18 23:48:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 554 transitions. [2024-11-18 23:48:18,240 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 554 transitions. Word has length 390 [2024-11-18 23:48:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:18,242 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 554 transitions. [2024-11-18 23:48:18,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 554 transitions. [2024-11-18 23:48:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-18 23:48:18,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:18,248 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:18,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:48:18,248 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:18,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -493561643, now seen corresponding path program 1 times [2024-11-18 23:48:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:18,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598603095] [2024-11-18 23:48:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-18 23:48:18,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:18,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598603095] [2024-11-18 23:48:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598603095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:48:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855789695] [2024-11-18 23:48:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:18,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:48:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:48:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:48:18,871 INFO L87 Difference]: Start difference. First operand 346 states and 554 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:19,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:19,004 INFO L93 Difference]: Finished difference Result 1032 states and 1656 transitions. [2024-11-18 23:48:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:48:19,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 390 [2024-11-18 23:48:19,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:19,011 INFO L225 Difference]: With dead ends: 1032 [2024-11-18 23:48:19,011 INFO L226 Difference]: Without dead ends: 689 [2024-11-18 23:48:19,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:48:19,014 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 180 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:19,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 580 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:48:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-18 23:48:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 685. [2024-11-18 23:48:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 532 states have (on average 1.494360902255639) internal successors, (795), 534 states have internal predecessors, (795), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 146 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 23:48:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1091 transitions. [2024-11-18 23:48:19,093 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1091 transitions. Word has length 390 [2024-11-18 23:48:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:19,094 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1091 transitions. [2024-11-18 23:48:19,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1091 transitions. [2024-11-18 23:48:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-18 23:48:19,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:19,102 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:19,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:48:19,104 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:19,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash -973906455, now seen corresponding path program 1 times [2024-11-18 23:48:19,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:19,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848060182] [2024-11-18 23:48:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:19,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-18 23:48:34,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:34,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848060182] [2024-11-18 23:48:34,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848060182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:34,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:34,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:48:34,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083233170] [2024-11-18 23:48:34,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:34,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:48:34,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:48:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:48:34,713 INFO L87 Difference]: Start difference. First operand 685 states and 1091 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:39,627 INFO L93 Difference]: Finished difference Result 1650 states and 2609 transitions. [2024-11-18 23:48:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:48:39,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 391 [2024-11-18 23:48:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:39,640 INFO L225 Difference]: With dead ends: 1650 [2024-11-18 23:48:39,640 INFO L226 Difference]: Without dead ends: 968 [2024-11-18 23:48:39,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:48:39,643 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 719 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:39,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1230 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-18 23:48:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-18 23:48:39,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 767. [2024-11-18 23:48:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 614 states have (on average 1.509771986970684) internal successors, (927), 616 states have internal predecessors, (927), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 146 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 23:48:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1223 transitions. [2024-11-18 23:48:39,706 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1223 transitions. Word has length 391 [2024-11-18 23:48:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:39,707 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1223 transitions. [2024-11-18 23:48:39,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1223 transitions. [2024-11-18 23:48:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-18 23:48:39,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:39,714 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:39,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:48:39,715 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:39,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:39,716 INFO L85 PathProgramCache]: Analyzing trace with hash -272306581, now seen corresponding path program 1 times [2024-11-18 23:48:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:39,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104267120] [2024-11-18 23:48:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-18 23:48:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104267120] [2024-11-18 23:48:40,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104267120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:40,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:40,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:48:40,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155139735] [2024-11-18 23:48:40,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:40,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:48:40,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:48:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:48:40,396 INFO L87 Difference]: Start difference. First operand 767 states and 1223 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:40,751 INFO L93 Difference]: Finished difference Result 1531 states and 2443 transitions. [2024-11-18 23:48:40,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:48:40,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 391 [2024-11-18 23:48:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:40,759 INFO L225 Difference]: With dead ends: 1531 [2024-11-18 23:48:40,759 INFO L226 Difference]: Without dead ends: 767 [2024-11-18 23:48:40,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:48:40,764 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 331 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:40,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 487 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:48:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-18 23:48:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2024-11-18 23:48:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 614 states have (on average 1.496742671009772) internal successors, (919), 616 states have internal predecessors, (919), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 146 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 23:48:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1215 transitions. [2024-11-18 23:48:40,825 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1215 transitions. Word has length 391 [2024-11-18 23:48:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:40,826 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1215 transitions. [2024-11-18 23:48:40,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1215 transitions. [2024-11-18 23:48:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-18 23:48:40,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:40,834 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:40,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:48:40,835 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:40,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1224137846, now seen corresponding path program 1 times [2024-11-18 23:48:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806875212] [2024-11-18 23:48:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:40,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-18 23:48:41,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:41,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806875212] [2024-11-18 23:48:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806875212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:41,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:41,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:48:41,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183617793] [2024-11-18 23:48:41,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:41,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:48:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:48:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:41,543 INFO L87 Difference]: Start difference. First operand 767 states and 1215 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:41,850 INFO L93 Difference]: Finished difference Result 1650 states and 2615 transitions. [2024-11-18 23:48:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:48:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 392 [2024-11-18 23:48:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:41,857 INFO L225 Difference]: With dead ends: 1650 [2024-11-18 23:48:41,857 INFO L226 Difference]: Without dead ends: 886 [2024-11-18 23:48:41,859 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 [2024-11-18 23:48:41,859 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 199 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:41,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 916 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:48:41,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-18 23:48:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 884. [2024-11-18 23:48:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 667 states have (on average 1.4692653673163418) internal successors, (980), 669 states have internal predecessors, (980), 210 states have call successors, (210), 6 states have call predecessors, (210), 6 states have return successors, (210), 208 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-18 23:48:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1400 transitions. [2024-11-18 23:48:41,930 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1400 transitions. Word has length 392 [2024-11-18 23:48:41,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:41,930 INFO L471 AbstractCegarLoop]: Abstraction has 884 states and 1400 transitions. [2024-11-18 23:48:41,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:48:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1400 transitions. [2024-11-18 23:48:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-18 23:48:41,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:41,937 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:41,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:48:41,937 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:41,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:41,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1351577181, now seen corresponding path program 1 times [2024-11-18 23:48:41,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:41,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603511377] [2024-11-18 23:48:41,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:41,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-18 23:48:57,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:57,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603511377] [2024-11-18 23:48:57,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603511377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:57,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:57,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:48:57,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909056935] [2024-11-18 23:48:57,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:57,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:48:57,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:48:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:48:57,482 INFO L87 Difference]: Start difference. First operand 884 states and 1400 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:49:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:02,952 INFO L93 Difference]: Finished difference Result 2736 states and 4294 transitions. [2024-11-18 23:49:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:49:02,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 392 [2024-11-18 23:49:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:02,966 INFO L225 Difference]: With dead ends: 2736 [2024-11-18 23:49:02,966 INFO L226 Difference]: Without dead ends: 1972 [2024-11-18 23:49:02,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:49:02,969 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 905 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:02,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1445 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-18 23:49:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-11-18 23:49:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 988. [2024-11-18 23:49:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 771 states have (on average 1.4915693904020753) internal successors, (1150), 773 states have internal predecessors, (1150), 210 states have call successors, (210), 6 states have call predecessors, (210), 6 states have return successors, (210), 208 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-18 23:49:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1570 transitions. [2024-11-18 23:49:03,053 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1570 transitions. Word has length 392 [2024-11-18 23:49:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:03,054 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1570 transitions. [2024-11-18 23:49:03,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:49:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1570 transitions. [2024-11-18 23:49:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-18 23:49:03,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:03,060 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:03,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:49:03,061 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:03,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1279190623, now seen corresponding path program 1 times [2024-11-18 23:49:03,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:03,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421671385] [2024-11-18 23:49:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2024-11-18 23:49:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421671385] [2024-11-18 23:49:13,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421671385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:13,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:13,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:49:13,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664152363] [2024-11-18 23:49:13,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:13,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:49:13,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:49:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:49:13,544 INFO L87 Difference]: Start difference. First operand 988 states and 1570 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:49:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:16,427 INFO L93 Difference]: Finished difference Result 2276 states and 3607 transitions. [2024-11-18 23:49:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:49:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 392 [2024-11-18 23:49:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:16,437 INFO L225 Difference]: With dead ends: 2276 [2024-11-18 23:49:16,437 INFO L226 Difference]: Without dead ends: 1420 [2024-11-18 23:49:16,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:49:16,442 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 349 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:16,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1289 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 23:49:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2024-11-18 23:49:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 988. [2024-11-18 23:49:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 771 states have (on average 1.4915693904020753) internal successors, (1150), 773 states have internal predecessors, (1150), 210 states have call successors, (210), 6 states have call predecessors, (210), 6 states have return successors, (210), 208 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-18 23:49:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1570 transitions. [2024-11-18 23:49:16,524 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1570 transitions. Word has length 392 [2024-11-18 23:49:16,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:16,525 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1570 transitions. [2024-11-18 23:49:16,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2024-11-18 23:49:16,526 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1570 transitions. [2024-11-18 23:49:16,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-18 23:49:16,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:16,529 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:16,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:49:16,530 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:16,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:16,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2049903777, now seen corresponding path program 1 times [2024-11-18 23:49:16,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:16,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715615078] [2024-11-18 23:49:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:16,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat